SUPERCLASS: INCERTAE SEDIS

ORDER: INCERTAE SEDIS

Genus: Apedolepis YOUNG, 1997
A. tomlinsonae YOUNG, 1997 (Type)

Genus: Eleochera SANSOM & SMITH, 2004
E. glossa SANSOM & SMITH, 2004 (Type)

Genus: Myllokunmingia SHU, ZHANG & HANG, in SHU, LUO, MORRIS, ZHANG, HU, HAU, ZHU, LI & CHEN, 1999
= Haikouichthys LUO, HU & SHU, in SHU, LUO, MORRIS, ZHANG, HU, HAU, ZHU, LI & CHEN, 1999
M. fengjiaoa SHU, ZHANG & HANG, in SHU, LUO, MORRIS, ZHANG, HU, HAU, ZHU, LI & CHEN, 1999 (Type)
= Haikouichthys ercaicunensis LUO, HU & SHU, in SHU, LUO, MORRIS, ZHANG, HU, HAU, ZHU, LI & CHEN, 1999

Gen. sp indet.

SUPERCLASS: GNATHOSTOMATA GEGENBAUR, 1874

CLASS, ORDER, FAMILY GENUS AND SPECIES INDET

Gen. sp indet.

SUPERCLASS: AGNATHA COPE, 1892 (HAEKEL, 1895)

CLASS, ORDER AND FAMILY INCERTAE SEDIS
= ORDER: ANASPIDI JAEKEL, 1911

INCERTAE SEDIS

Genus: Anatolepis BOCKELI & FORTEY, 1976
A. heintzi BOCKELI & FORTEY, 1976 (Type)

Genus: Dictyorhabdus WALCOTT, 1892
D. priscus WALCOTT, 1892 (Type)

Genus: Gyropeltus ROHON, 1893 (nomen dubium)
G. lahuseni ROHON, 1893 (Type)

Genus: Pircanchaspis ERDTMANN, WEBER, SCHULTZE & EGENHOFF, 2000
P. rinconensis ERDTMANN, WEBER, SCHULTZE & EGENHOFF, 2000 (Type)

Gen. sp indet.

ORDER: ASTRASPIDIFORMES BERG, 1940

Family: ASTRASPIDIDAE Eastman, 1917

Genus: Astraspis WALCOTT, 1892
A. desiderata WALCOTT, 1892 (Type)
A. sp

Genus: Pycnaspis ØRVIG, 1958
P. splendens ØRVIG, 1958 (Type)

CLASS: OSTRACODERMI COPE, 1889
= CLASS: DIPLORHINA HAEKEL, 1895
= CLASS: PTERASPIDOMORPHI GOODRICH, 1909
= CLASS: OSTRACOPHORI COPE, 1891
= GROUP 1: HOLARICHENIA ROHON, 1900
= CLASS: MALACOSTOM JAEKEL, 1911
= SUBCLASS: PALAEOSTRACI JAEKEL, 1911

ORDER: HAOINASPIDIFORMES GUO, WANG, GAI, ZHAO, DING & LI, 2020

Family: HAOINASPIDIDAE Guo, Wang, Gai, Zhao, Ding & Li, 2020

Genus: Haoina GUO, WANG, GAI, ZHAO, DING & LI, 2020
H. elegantia GUO, WANG, GAI, ZHAO, DING & LI, 2020 (Type)

ORDER: TESAKOVIASPIDIDA KARATAJUTE-TALIMAA & SMITH, 2004

Family: TESAKOVIASPIDIDAE Karatajute-Talimaa & Smith, 2004

Genus: Tesakoviaspis KARATAJUTE-TALIMAA, 1978
T. concentrica KARATAJUTE-TALIMAA, 1978 (Type)

SUBCLASS: HETEROSTRACI LANKESTER, 1868
= SUBCLASS: PTERASPIDES
= SUBCLASS: OSTEOSTRACI DEAN 1900

Incertae sedis

Genus: Aporemaspis ELLIOTT & LOEFFLER, 1989
A. pholidata ELLIOTT & LOEFFLER, 1989 (Type)

Gen. sp indet.

ORDER: ARANDASPIDIFORMES RITCHIE & GILBERT-TOMLINSON, 1977

Family: ARANDASPIDIDAE Ritchie & Gilbert-Tomlinson, 1977

Genus: Andinaspis GAGNIER, 1991
A. suarezorum GAGNIER, 1991 (Type)
A. priontoleips RITICHIE & GILBERT-TOMLINSON, 1977

Genus: Arandaspis RITCHIE & GILBERT-TOMLINSON, 1977
A. prionotolepis RITCHIE & GILBERT-TOMLINSON, 1977 (Type)
A. sp

Genus: Sacabambaspis GAGNIER, BLIECK & RODRIGO, 1986
S. janvieri GAGNIER, BLIECK & RODRIGO, 1986 (Type)
S. sp

Genus: Turinagondwana

Gen. sp indet.

ORDER: ASTRASPIDOFORMES BERG, 1937
= ORDER: ERIPTYCHIIFORMES EMEND TARLO, 1962
= ERIPTYCHIIDAE Orvig, 1958
= ERIPTYCHIDA STENSIO, 1958
= SUBORDER: TESSERASPIDIDA TARLO, 1962

Family: ASERASPIDIDAE Halstead, 1993

Genus: Aseraspis DINELEY & LOEFFLER, 1976
A. canadensis DINELEY & LOEFFLER, 1976 (Type)

Gen. sp indet.

Family: ERIPTYCHIIDAE Tarlo, 1962

Genus: Eriptychius WALCOTT, 1892
E. americanus WALCOTT, 1892 (Type)
E. orvigi DEINSON, 1967
E. leipnitzae SCHALLREUTER, 1983

Genus: Rohonodus SCHALLREUTER, 1983
R. vastorfensis SCHALLREUTER, 1983 (Type)

Genus: Nova? SCHALLREUTER, 1983

Family: POROPHORASPIDAE Halstead, 1993

Genus: Porophoraspis RITCHIE & GILBERT-TOMLINSON, 1977
P. crenulata RITCHIE & GILBERT-TOMLINSON, 1977 (Type)
P. sp

Family: LEPIDASPIDIDAE Halstead, 1993

Genus: Lepidaspis DINELEY & LOEFFLER, 1976
L. serrata DINELEY & LOEFFLER, 1976 (Type)
L. sp

Family: ONISCOLEPIDIDAE Märss & Karatajute-Talimaa, 2009

Genus: Oniscolepis PANDER, 1856
O. dentate PANDER, 1856 (Type)
= Oniscolepis serratus PANDER, 1856
= Oniscolepis crenulatus PANDER, 1856
= Strosipherus indentatus PANDER, 1856
= Strosipherus serratus PANDER, 1856
= Strosipherus laevis PANDER 1856

Family: TESSERASPIDIDAE Berg, 1940

Genus: Kallostrakon LANKESTER, 1870
K. podura LANKESTER, 1870 (Type)
K. macanuffi HALSTEAD TARLO, 1964
K. grindrodi HALSTEAD TARLO, 1964
K. alleni HALSTEAD TARLO, 1964

Genus: Tesseraspis WILLS, 1935
T. mutabilis (BROTZEN, 1934) HALSTEAD TARLO, 1964
= Lophosteus mutabilis BROTZEN, 1934
= Lophaspis crenulata BROTZEN, 1947
T. tessellata WILLS, 1935 (Type)
T. toombsi HALSTEAD TARLO, 1964
T. orvigi HALSTEAD TARLO, 1964
T. denisoni HALSTEAD TARLO, 1964
T. talimaae HALSTEAD TARLO, 1965

ORDER: CYATHASPIDFORMES KIAER & HEINTZ, 1935
= ORDER: CYATHASPIDA KIER, 1930
= ORDER: CYATHASPIDIDA TARLO, 1962
= SUBORDER: CYATHSPIDFORMES

Family: ANGLASPIDIDAE Kiaer, 1932

Genus: Anglaspis JAEKEL, 1972
 A. macculloughi (WOODWARD, 1891) JAEKEL, 1927 (Type)
= Cyathaspis macculloughi WOODWARD, 1891
A. insignis WILLIS, 1936 (ex KIAER, 1932)
= Anglaspis insignis KIAER, 1932 (nomen nudum)
= Anglaspis poatostriata KIAER, 1932 (nomen nudum)
A. expatriata DENISON, 1964
A. heintz BLIECK & HEINTZ, 1972 (ex KIAER, 1932)
= Anglaspis heintzi KIAER, 1932 (nomen nudum)
A. elongate BLIECK & HEINTZ, 1972 (ex KAIER,1932)
= Anglaspis elongata KIER, 1932 (nomen nudum)
A. sp

Genus: Paraliliaspis NOVITSKAYA & KARATAJUTE-TAILMAA, 1995
P. egregia NOVITSKAYA & KARATAJUTE-TAILMAA, 1995 (Type)

SUBORDER: CYATHASPIDIDAE KIAER, 1930 EMEND TARLO, 1962
= CTENASPIDIDA ZYCH, 1932
= CTENASPINAE DENISON, 1953
= CYATHASPIDEI KAIER, 1930
= CYATHASPIDAE KAIER, 1932 EMEND. WHITE, 1935
= CYATHASPJIDOIDEI BERG, 1940
= CYATHASPINAE ZYCH, 1931
= PORASPIDEI KIAER, 1930
= PALAESPIDAE WHITE, 1935
= PALAESPINAE ZYCH, 1931
= PORASPIDOIDEI BERG, 1940
= PORASPINAE DENISON, 1953

Family: CYATHASPIDIDAE Kiaer, 1932
= Family: PORASPIDIDAE Kiaer, 1932
= Family: TOLYPELEPIDIDAE Strand, 1934
= Family: IRREGULAREASPIDIDAE Denison, 1964
= Family: CTENASPIDIDAE Kiaer, 1930
= Family: TORPEDASPIDIDAE Halstead, 1993
= Family: CORVASPIDIDAE Dineley, 1953

Gen. sp indet.

Subfamily: ARCHEGONASPIDINAE Marss, 2019

Genus: Archegonaspis JAEKEL, 1927
A. integer (KUNTH, 1872)
= Cyathaspis (Pteraspis) integer KUNTH, 1872
 A. schmidti (GEINITZ, 1884)
= Cyathaspis schmidti GEINITZ, 1884
= Archegonaspis integer var schmidti (GEINITZ, 1884) KIAER, 1932
= Aequiarchegonaspis schmidti (GEINITZ, 1884) STENSIO, 1958
A. lindstromi KIAER, 1932
= Lauaspis lindstromi (KAIER, 1932) STENSIO, 1958
A. drummondi FLOWER & WAYLANDSMITH, 1952
A. bimaris NOVITSKAYA, 1970
A. bashkirica MARSS, 2019
= Cyathaspis sp indet OBRUCHEV, 1938
A. sp

Subfamily: CYATHASPIDINAE Denison, 1964
= Family: DINASPIDAE Kiaer, 1932

Genus: Alainaspis ELLIOTT & DINELEY, 1985
A. platyrhina ELLIOTT & DINELEY, 1985 (Type)

Genus: Ariaspis DENISON, 1963
A. ornata DENISON, 1963 (Type)

Genus: Boothiaspis BROAD, 1973
B. alata BROAD, 1973 (Type)
B. angusta BROAD, 1973
B. ovata BROAD, 1973

Genus: Cyathaspis LANKESTER, 1865
= Anatifopsis RUEDEMANN, 1916
C. banksii (HUXLEY & SALTER, 1856) LANKESTER, 1865 (Type)
= Pteraspis banksii HUXLEY & SALTER, 1856
C. arcadia (MATTHEW, 1888)
= Diplaspis arcadica MATTHEW, 1888
C. wardelli (RUEDEMANN, 1916)
= Anatifopsis wardelli RUEDEMANN, 1916
= Eoarchegonaspis wardelli (RUEDEMANN, 1916) KIAER, 1932 (nomen nudum)
C. ingeni BRYANT, 1926
 C. alexandari MARSS, 2019
C. sp

Genus: Dinaspidella STRAND, 1934 (nomen nudum)
= Dinaspis KIAER, 1932 non LEONARDI, 1911
D. robusta (KIAER, 1932) STRAND, 1934 (Type)
= Dinaspis robusta KIAER, 1932 (nomen nudum)
D. elizabethae DINELEY & LOEFFLER, 1976
D. sp

Genus: Listraspis DENISON, 1964
L. canadensis DENISON, 1964 (Type)

Genus: Pionaspis DENISON, 1964
P. acuticosta DENISON, 1964 (Type)
P. planicosta DENISON, 1964
P. amplissima DINELEY & LOEFFLER, 1976

Genus: Ptomaspis DENISON, 1963
P. canadensis DENISON, 1963 (Type)

Genus: Seretaspis STENSIO, 1958
S. zychi STENSIO, 1958 (Type)
S. miroshnikovi OBRUCHEV, 1964

Genus: Steinaspis OBRUCHEV, 1964
S. miroshnikovi OBRUCHEV, 1964 (Type)

Genus: Vernonaspis FLOWER & WAYLAND-SMITH, 1952
V. allenae FLOWER & WAYLAND-SMITH, 1952 (Type)
V. leonardi FLOWER & WAYLAND-SMITH, 1952
V. bamberi DENISON, 1963
V. major DENISON, 1963
V. bryanti DENISON, 1964
V. sekwiae DENISON, 1964
V. tortucosta DINELEY & LOEFLER, 1976
V. sp

Gen. sp indet.

Subfamily: IRREGULAREASPINAE emend Denison, 1964

Genus: Dikenaspis DEINSON, 1963
D. yukonensis DEINSON, 1963 (Type)

Genus: Irregularaspis ZYCH, 1931
= Dictyaspis KIAER, 1932 non
= Dictyaspidella STRAND, 1934
I. stensioei ZYCH, 1931 emend BLIECK & HEINTZ, 1972 (Type)
 = Irregulareaspis stensiöi ZYCH, 1931
Note: As per Blieck & Heintz, 1972…emended as I. stensioei Zynch (I. stensiöi emend. Brotzen (1936:6) and I. stensioi emend Denison (1964: 402) and Obruchev (1964: 58) are ‘unjustified emendations’ of the original spelling of the species name (ICZN art. 32 c(i) and 33)…
I. hoeli (KIAER, 1932)
I. mirabilis BLIECK & HEINTZ, 1972
I. seretensis NOVITSKYAYA, 1983
I. skalskiensis NOVITSKAYA, 1983
I. sp

Genus: Nahanniaspis DINELEY & LOEFFLER, 1976
N. mackenziei DINELEY & LOEFFLER, 1976 (Type)

Subfamily: PORASPIDINAE Deinson, 1964

Genus: Allocryptaspis WHITELY, 1940
A. elliptica (BYRANT, 1934) WHITELY, 1940 (Type)
= Cryptaspis elliptica BYRANT, 1934
A. utahensis DENISON, 1953
A. laticostatus DENISON, 1960
A. sandbergi ELLIOT, REED & LOEFFLER, 2004

Genus: Americanaspis WHITELY, 1940
= Palaeaspis CLAYPOLE, 1885 non GRAY
A. americana (CLAYPOLE, 1885) WHITELY, 1940 (Type)
= Palaespis americana CLAYPOLE, 1885
= Palaeaspis bitruncata CLAYPOLE, 1884
= Palaeaspis elliptica CLAYPOLE, 1885
A. claypolei DENISON, 1964
A. sp

Genus: Faberaspis ELLIOTT, LASSITER & BLIECK, 2018
F. elgae ELLIOTT, LASSITER & BLIECK, 2018 (Type)

Genus: Homalaspidella STRAND, 1934
= Homalaspis KIAER, 1932 non REINHART, 1860
= Homaspis KIAER & HEINTZ, 1935 non FOERSTER, 1868 or SKUSE, 1888
H. nitida (KIAER, 1932) STRAND, 1934 (Type)
= Homalaspis nitida KIAER, 1932
H. borealis DENISON, 1963
H. sp

Genus: Lechriaspis ELLIOTT & PETRIELLO, 2011
L. patula ELLIOTT & PETRIELLO, 2011 (Type)

Genus: Liliaspis NOVITSKAYA, 1972
L. philippovae NOVITSKAYA, 1972 (Type)

Genus: Poraspis KIAER, 1930
= Holaspis LANKESTER, 1873 non GRAY, 1863
P. sericea (LANKESTER, 1873) KIAER, 1930 (Type)
= Holaspis sericeus LANKESTER, 1873
P. sturi (ALTH, 1874)
= Cyathaspis sturi ALTH, 1874
P. polaris KIAER, 1930
P. pompeckji (BROTZEN, 1933) KIAER & HEINTZ, 1935
= Palaeaspis pompeckji BROTZEN, 1933
P. brevis KIAER, 1932
P. cylindrica KIAER & HEINTZ, 1935
P. magna KIAER & HEINTZ, 1933
P. rostrata KIAER & HEINTZ, 1935 (ex KIAER, 1932)
P. simplex (BROTZEN, 1933) KIAER & HEINTZ, 1935
= Palaeaspis simplex BROTZEN, 1933
P. teres (NOVITSKAYA, 1970)
= Palaeaspis teres NOVITSKAYA, 1970
P. heintzae ELLIOTT, LOEFFLER & LIU, 1988
P. cracens ELLIOTT, LOEFFLER & LIU, 1988
= Porasapis cf. P. polaris BROAD, 1973
P. thules ELLIOTT, LOEFFLER & LIU, 1988
= Poraspis cf. P. polaris BROAD & DINELEY, 1973
P. parmula ELLIOTT, LOEFFLER & LIU, 1988
= Poraspis cf. P. intermedia BORAD & DINELEY, 1973
P. thomasi ELLIOTT & PETRIELLO, 2011
P. sp

Gen. sp indet.

Subfamily: TOLYPELEPIDINAE Strand, 1934
= Family: TOLYPELEPIDIDAE Strand, 1934
= TOLYPELEPIDIDA DENISON, 1964

Genus: Asketaspis DINELEY & LOEFFLER, 1976
A. interstincia DINELEY & LOEFLER, 1976 (Type)

Genus: Athenaegis SOEHN & WILSON, 1990
A. chattertoni SOEHN & WILSON, 1990 (Type)

Genus: Tolypelepis PANDER, 1856
= Tolypaspis SCHMIDT
T. undulata PANDER, 1856 (Type)
= Oniscolepis magnus PANDER, 1856
T. timanica KOSSOVOY & OBRUCHEV, 1962
T. lenzi DINELEY & LOEFFLER, 1976
 T. bedovensis MARSS, 2019
T. nova THORSTEINSSON, 1958
T. sp

Subfamily: CTENASPINAE emend Kiaer, 1932
= Family: CTENASPIDAE Kiaer, 1932

Genus: Ctenaspis KIAER, 1930
C. dentata KIAER, 1930 (Type)
C. cancellata KIAER, 1930
C. kiaeri ZYCH, 1931
C. obruchevi DINELEY, 1976
C. russelli DINELEY, 1976
C. ornata DINELEY, 1976
C. sp

Subfamily: TORPEDASPINAE emend Halstead, 1993
= Family: TORPEDASPIDAE Halstead, 1993

Genus: Torpedaspis BROAD & DINELEY, 1973
T. elongata BROAD & DINELEY, 1973 (Type)

Subfamily: CORVASPIDINAE Dineley, 1953

Genus: Corvaspis WOODWARD, 1934
C. kingi WOODWARD, 1934 (Type)
C. graticulata DINELEY, 1953
C. karatajuteae HALSTEAD TARLO, 1965
C. arctica LOEFFIER & DINELEY, 1976
C. sp

Genus: Corvelolepis BLIECK & KARATAJUTE-TALIMAA, 2001
C. elgae BLIECK & KARATAJUTE-TALIMAA, 2001 (Type)
= Corvaspis KURIK et al, 1982 (p. 69)
= Corvaspis cf. kingi WOODW.[sic], KARATAJUTE-TALIMAA, 1983 (p. 22)
= Corvaspis sp. nov., KARATAJUTE-TALIMAA et al, 1986 (p. 255)
= Coravaspis sp.cf. kingi KARATAJUTE-TALIMAA & BLIECK, 1999 (p. 129, table 20)
= Corvaspis sp. cf. C. kingi BLIECK & KARATAJUTE-TALIMAA (in press)

Gen. sp indet.

ORDER: PTERASPIDIFORMES BERG, 1940
= PTERASPIDOMORPHI
= ORDER: PTERICHTHYI JAEKEL, 1911

Incertae sedis

Genus: Aserotaspis DINELEY & LOEFFIER, 1976
A. canadensis DINELEY & LOEFFIER, 1976 (Type)

Genus: Natalaspis DINELEY & LOEFFIER, 1976
N. planicosta DINELEY & LOEFFIER, 1976 (Type)
N. adunata DINELEY & LOEFFLER, 1976

Gen. sp indet.

SUBORDER: PTERASPIDIDA KIAER, 1932 EMEND TARLO, 1962

Family: PENYGASPIDIDAE Halstead, 1993

Genus: Penygaspis STENSIO, 1958
P. dixoni (WHITE, 1938) STENSIO, 1958 (Type)
= Pteraspis dixoni WHITE, 1938

Family: ANCHIPTERASPIDIDAE Elliott, 1984

Genus: Anchipteraspis ELLIOTT, 1984
A. crenulata ELLIOTT, 1984 (Type)

Genus: Ulititaspis ELLIOTT, 1984
U. aquilonia ELLIOTT, 1984 (Type)

Family: PROTASPIDIDAE Janvier, 1996

Genus: Protaspis BRYANT, 1933
P. bucheri BRYANT, 1933 (Type)
= Pteraspis bucheri BRYANT, 1932
P. dorfi BYRANT, 1933
= Pteraspis dorfi BYRANT, 1932
P. brevirostris BRYANT, 1933
P. nanus BRYANT, 1933
P. amplus BRYANT, 1933
P. perlatus BRYANT, 1933
P. perryi BRYANT, 1933
P. cingulus BRYANT, 1933
P. constrictus BRYANT, 1933
P. tenuistriatus DENISON, 1953
P. erroli DENISON, 1967
= Protaspis (Protaspis) erroli DENISON, 1967
P. mcgrewi DENISON, 1970
P. brevispina DENISON, 1970
P. transversa DENISON, 1970

Genus: Xylaspis PERNEGRE, 2004
= Spitsbergaspis PERNEGRE, 2003 non PRIBYL & VANEK, 1980
X. prima (PERNEGRE, 2003) PERNEGRE, 2004 (Type)
= Spitsbergaspis prima PERNEGRE, 2003

Family: PTERASPIDIDAE Claypole, 1885 (Woodward, 1891)

Genus: Cosmaspis DENISON, 1970
C. transversa DENISON, 1970 (Type)

Genus: Cyrtaspidichthys WHITLEY, 1940
C. ovata (BYRANT, 1932) WHITLEY, 1940 (Type)
= Protaspis ovata BYRANT, 1932
C? sculpta (BYRANT, 1932) WHITLEY, 1940
= Protaspis sculpta BYRANT, 1932

Genus: Gigantaspis HEINTZ, 1962
G. isachseni HEINTZ, 1962 (Type)
G. bocki HEINTZ, 1962
G. laticephala (BLIECK & GOUJET, 1983) PERNEGRE & GOUJET, 2007
= Zascinaspis laticephala BLIECK & GOUJET, 1983
G. minima PERNEGRE & GOUJET, 2007

Genus: Helaspis ELLIOTT, DINELEY & JOHNSON, 2000
H. finis ELLIOTT, DINELEY & JOHNSON, 2000 (Type)
H. sp

Genus: Miltaspis BLIECK, 1981
M. anatirostrata (BLIECK, 1975) BLIECK, 1981 (Type)
= Althaspis anatirostra BLIECK, 1975
M? spathulirostrata (STENSIO, 1958) BLIECK, 1981
= Pseudopteraspis? spathulirostris STENSIO, 1958
= Althaspis? spathulirostris (STENSIO, 1958), STENSIO, 1964

Genus: Mitraspis ELLIOTT, SCHULTZE & BLIECK, 2015
M. cracens ELLIOTT, SCHULTZE & BLIECK, 2015 (Type)

Genus: Rodenaspis BLEICK, 1984
R. brevispina (DENISON, 1970) BLEICK, 1984 (Type)
= Protaspis (Protaspis) brevispina DENISON, 1970

Genus: Woodfjordaspis PERNEGRE, 2006
W. felixi PERNEGRE, 2006 (Type)

Gen. sp indet.

Subfamily: PTERASPIDINAE Denison, 1970

Genus: Althaspis ZYCH, 1931
= Cymripteraspis WHITE, 1960
= Lerichaspis ZYCH, 1931
= Pseudopteraspis STENSIO, 1958
A. elongata (ALTH 1874?) ZYCH, 1931
= Scaphaspis elongatus ALTH, 1874?
= Pteraspis sturi mut. elongata ZYCH, 1927
= Podolaspis (Althaspis) elongata (ALTH, 1874 ?) ZYNCH, 1931
= Pteraspis elongata (ALTH, 1874 ?) BROTZEN, 1933
= Rhinopteraspis elongata (ALTH, 1874 ?) BROTZEN, 1936
= Pseudopteraspis elongata (ALTH, 1874?) STENSIO, 1958
= Pteraspis (Althaspis) elongata (ALTH, 1874?) WHITE, 1960
= Pseudopteraspis kujdonowiensis STENSIO, 1958
= Althaspis kujdanowiensis (STENSIO, 1958)
= Althaspis samsonwiczi TARLO, 1961
= Podolaspis (Lericheaspis) longirostrata ZYCH, 1931
= Pteraspis lerichi sp. n., mut. longirostra mut. Nov., ZYCH, 1927
= Pteraspis longirostrata (ZYCH, 1931) BROTZEN, 1933
A. leachi WHITE, 1934
= Pteraspis (Cymripteraspis) leachi (WHITE, 1934) WHITE, 1960
A. whitei (DENISON, 1955) DENISON, 1970
= Pteraspis whitei DENISON, 1955
= Pteraspis (Simopteraspis) whitei DENISON, 1955
= Canadapteraspis whitei (DEINSON, 1955) DINELEY & LOEFFLER, 1976
A. vimiensis (WHITE, 1960)
= Pteraspis (Althaspis) vimiensis WHITE, 1960
A. senniensis LOEFFLER & THOMAS, 1980
A. sapovensis (BROTZEN, 1933) NOVITSKAYA, 1986
= Pteraspis sapovensis BROTZEN, 1933

Genus: Belgicaspis ZYCH, 1931
B. crouchi (LANKESTER, 1868) ZYCH, 1931 (Type)
= Pteraspis crouchi LANKESTER, 1868
= Pteraspis subgenus Belicaspis crouchi (LANKESTER, 1868) ZYCH, 1931
= Scaphaspsi recturs LANKESTER, 1868
= Pteraspis crouchi LANKESETR, 1868
B. var. maatockensis

Genus: Bleckaspis SCHULTZE & ILYKES, 1996
B. priscillae (DENISON, 1953) SCHULTZE & ILYKES, 1996 (Type)
= Protaspis (Protoaspis) priscallae DENISON, 1953
= Pteraspis priscallae (DENISON 1953) DENISON, 1970
= Errivaspis? priscillae (DENISON, 1953) BLIECK, 1984

Genus: Canadapteraspis DINELEY & LOEFFLER, 1976
C. alocostomata DINELEY & LOEFFLER, 1976 (Type)
C. thymostomata DINELEY & LOEFFLER, 1976
C. helostomata DINELEY & LOEFFLER, 1976
C. sp

Genus: Cryptaspis BRYANT, 1934
C. ellipticus BRYANT, 1934 (Type)
C. flabelliformis BRYANT, 1936
C. sp

Genus: Cyrtaspis BRYANT, 1932
C. ovatus BRYANT, 1932 (Type)
C. papillatus BRYANT, 1933
C. sculptus BRYANT, 1933
C. falcatus BRYANT, 1933

Genus: Dnestraspis NOVITSKAYA, 1983
D. firma NOVITSKAYA, 1983 (Type)

Genus: Errivaspis BLEICK, 1984
E. waynensis (WHITE, 1935) BLEICK, 1984 (Type)
= Pteraspis rostrata var waynensis WHITE, 1935
= Pteraspis rostrata var toombsi WHITE, 1938
E. depressa (STENSIO, 1958) BLEICK, 1984
= Plesiopteraspis? depressa STENSIO, 1958
= Pteraspis depressa (STENSIO, 1958) NOVITSKAYA, 1975
E. magnipinealis (BROTZEN, 1933) BLEICK, 1984
= Pteraspis magnipinealis BROTZEN, 1933
= Zascinaspis magnipinealis OBRUCHEV & KARATAJUTE-TALIMAA, 1967
= Pteraspis major (ZYCH) BALABAI, 1959

Genus: Escharaspis ELLIOTT, 1983
E. alata ELLIOTT, 1983 (Type)

Genus: Europrotaspis WHITE, 1961
E. rotunda (GROSS, 1933)?
E? wiheriesiensis (BROTZEN, 1936)
E. crenulata (WHITE, 1961)
= Protaspis (Europrotaspis) crenulata WHITE, 1961
E. arnelli (BROTZEN, 1936)
= Protaspis arnelli BROTZEN, 1936
= Protaspis (Europrotaspis) arnelli (BROTZEN, 1936) WHITE, 1961
= Glossiodiaspis arnelli (BROTZEN, 1936) OBRUCHEV, 1964

Genus Lamiaspis ILYES & ELLIOTT, 1994
L. longirpa ILYES & ELLIOTT, 1994 (Type)

Genus: Lampraspis DENISON, 1970
L. tuberculata DENISON, 1970 (Type)

Genus: Loricopteraspis TARLO, 1961
= Brotzenaspis STENSIO, 1958
L. althi (STENSO, 1958) TARLO, 1961 (Type)
= Pteraspis althi STENSO, 1958
= Althaspis althi (STENSIO, 1958) DENISON, 1970
= Brotzenaspis pteraspidoides STENSIO, 1958
= Althaspis pteraspidoides (STENSIO, 1958) DENISON, 1970
L. dairydinglensis (WHITE, 1957) BLIECK, 1984
= Pteraspis (Pteraspis) dairydinglensis WHITE, 1957

Genus: Mylopteraspis STENSIO, 1958
M. robusta STENSIO, 1958 (Type)

Genus: Mylopteraspidella BLEICK, 1984
= Mylopteraspis STENSIO, 1958 (partim)
M. gracilis (STENSIO, 1958) BLIECK, 1984 (Type)
= Mylopteraspis gracilis STENSIO, 1958

Genus: Oreaspis DEINSON, 1970
O. ampla (BYRANT, 1933)
O? tenuistriata (DENISON, 1953)
O. dunklei DENISON, 1970 (Type)
O. williamsi DENISON, 1970

Genus: Panamitaspis ELLIOTT & ILYES, 1996
P. snowi ELLIOTT & ILYES, 1996 (Type)

Genus: Parapteraspis STENSIO, 1958
P. jackana (WHITE, 1935) BLIECK, 1984
= Pteraspis jackana WHITE, 1935
P. gracilis STENSIO, 1958 (Type)
P. plana STENSIO, 1958
P. lata (STENSIO, 1958)
= Plesiopteraspis? lata STENSIO, 1958
= Podolaspis? lata (STENSIO, 1958) NOVITSKAYA, 1975
P. djuriensis BLIECK, 1984
= Parapteraspis plana (BROTZEN) STENSIO, 1958

Genus: Pirumaspis ILYES & ELLIOTT, 1994
P. lancasteri ILYES & ELLIOTT, 1994 (Type)

Genus: Podolaspis ZYCH, 1931
= Plesiopteraspis STENSIO, 1958
P. podolica (ALTH, 1874) ZYCH, 1931
= Pteraspis podolicus ALTH, 1874
= Scaphaspis haueri ALTH, ?1874
= Pteraspis kneri (LANK), SIEMIRADZKI, 1906
= Pteraspis lerichei sp. n. mut. rostrata ZYCH, 1927
P. lerichei (ZYCH, 1927) ZYCH, 1931 (Type)
= Pteraspis lerichei mut rostrata ZYCH, 1927
= Pteraspis major ALTH, ?1874
= Pteraspis angustatus ALTH, ?1874
= Pteraspis sturi ALTH, 1927
P. zychi (BROTZEN, 1933) NOVITSKAYA, 1975
= Pteraspis zychi BROTZEN, 1933
P. gracilis (STENSIO, 1958)
= Parapteraspis gracilis STENSIO, 1958

Genus: Protopteraspis LERICHE, 1924
= Simopteraspis WHITE, 1950
 Pmitchelli (POWRIE, 1863) POWRIE, 1864
   = Pteraspis mitchelli (POWRIE, 1863) POWRIE, 1864
P. gosseleti LERICHE, 1924 (Type)
   = Pteraspis (Simopteraspis) gossleti (LERICHE, 1906) WHITE, 1950
= Pteraspis (Protopterasipis) gosseletti (LERICHE, 1924) SCHMIDT, 1959
P. pygmaea (KIAER, 1928) OBRUCHEV, 1964
   = Pteraspis primaevus KIAER, 1928
   = Pteraspis primaeva (KIAER, 1928) ZYCH, 1931
   = Pteraspis (Simopteraspis) primaeva (KIAER, 1928) WHITE, 1950
   = Simopteraspis primaeva (KIAER, 1928) STENSIO, 1958
 P.  vogti (KIAER, 1928) OBRUCHEV, 1964
   = Pteraspis vogti KIAER, 1928
   = Pteraspis (Simopteraspis) vogti WHITE, 1950
   = Simopteraspis vogti STENSIO, 1958
 P. leathensis (WHITE, 1935) FRIEND, WILLIAMS et al, 1978
   = Pteraspis (Simopteraspis) leathensis (WHITE, 1935) WHITE, 1950
   = Pteraspis (Protopteraspis) leathensis (WHITE, 1935) SCHMIDT, 1959
P. aquilonia BLIECK, 1981
 P. silktokia ELLIOTT & DINELEY, 1983
 P. sartokia ELLIOTT & DINELEY, 1983
 P. (?) corniga ELLIOTT & DINELEY, 1983
 P. (?) arctica ELLIOTT & DINELEY, 1983

Genus: Psephaspis ORVIG, 1961
 P.  williamsi ORVIG, 1961 (Type)
 P. bystrowi HALSTEAD TARLO, 1964
 P. idahoensis DENISON, 1968

Genus: Pteraspis KNER, 1847
= Parapteraspis STENSIO, 1958
= Scaphaspis LANKESTER, 1868
 P. rostrata (AGASSIZ, 1835) KNER, 1847 (Type)
  = Cephalaspis rostratus AGASSIZ, 1835
= Cephalaspis lewisii AGASSIZ, 1835
= Cephalaspis lloydii AGASSIZ, 1835
 = Scaphaspis lloydii (AGASSIZ, 1835) LANKESTER, 1868
 = Pteraspis rostratus (AGASSIZ, 1835) LANKESTER, 1868
 = Pteraspis rostrata var. virgoi WHITE, 1935
 = Pteraspis rostrata var. trimpleyensis WHITE, 1935
= Pteraspis (Pteraspis)var. trimpleyensis (AGASSIZ, 1835) WHITE, 1956
= Pteraspis (Pteraspis) rostrata (AGASSIZ, 1835) WHITE, 1956
P. truncatus HUXLEY & SALTER, 1856
 P. banksii HUXLEY & SALTER, 1856
P. dewalquei FRAIPONT, 1907-1908
P. major ZYCH, 1927
P. wiheriensis (BROTZEN, 1936) LERICHE, 1947
   = Protaspis wiheriesiensis BROTZEN, 1936
   = Europrotaspis? wiheriesiensis (BROTZEN, 1936)
= Pteraspis dunensis LEIRCHE, 1926 (partim)
   = Pteraspis rotundata GROSS, 1933 (partim)
= Pteraspis (Cyrtaspis) wiheriensis (BROTZEN, 1936) LERICHE, 1947
 P. priscillae (DENISON, 1953)
  = Protaspis priscalle DENISON, 1953
P. carmani DENISON, 1960

Genus: Rhinopteraspis JAEKEL, 1919
R. cornubica (McCOY, 1851) TARLO, 1961 (Type)
= Steganodictyum cornubicum McCOY, 1851
= Scaphaspis cornubicus (McCOY, 1851) WOODWARD, 1868
= Pteraspid gen. indet. cornubicus (McCOY, 1851) WOODWARD, 1891
= Pteraspis cornubicus (McCOY, 1851) COLLINS, 1893
 = Pteraspis (Steganodictyum) cornubica (McCOY, 1851) DEWEY, 1948
  = Palaeoteuthis dunensis ROEMER, 1855
= Pteraspis dunensis (ROEMER, 1855) HUXLEY, 1861
= Pteraspid gen. indet dunensis (ROEMER, 1855) WOODWARD, 1891
= Rhinopteraspis dunensis (ROEMER, 1855) JAEKEL, 1919
= Scaphaspis dunensis  (ROEMER, 1855) LANKESTER, 1868-1870
= Pteraspis (Rhinopteraspis) dunensis (ROEMER, 1855) WHITE, 1938
= Pteraspis (Archaeoteuthis) dunensis (ROEMER, 1855) WANGSJO, 1952
R. crouchi (LANKESTER, 1868)
  = Pteraspis crouchii (Salter, MS) LANKESTER, 1868
 R. sanctacrucensis BLEICK, 1980

Genus: Stegobranchiaspis ELLIOTT, 1983
 S. baringensis ELLIOTT, 1983 (Type)
 S. baringensis falcata ELLIOTT, 1983

Genus: Tuberculaspis IYLES &  ELLIOTT, 1994
 T. elyensis IYLES & ELLIOTT, 1994 (Type)

Genus: Unarkaspis ELLIOTT, 1983
 U. schultzei ELLIOTT, 1983 (Type)

Family: LARNOVASPIDIDAE Novitskaya 1986

Genus: Brachipteraspis BROTZEN, 1936
 B. latissima (ZYCH, 1927) BROTZEN, 1936 (Type)
= Pteraspis latissima ZYCH, 1927
= Pteraspis lerichei sp. n., mut. latissima mut n. ZYCH, 1927
= Pteraspis lerichei sp. n. mut. lata mut, n. ZYCH, 1927
= Pteraspis sturi ALTH sp. , mu. lata mut . n. ZYCH, 1927
B. monmouthensis (WHITE, 1935) BLEICK, 1984
   = Pteraspis rostrata WOODWARD, 1891
   = Pteraspis rostrata var monmouthensis WHITE, 1935
   = Pteraspis (Pteraspis) rostrata monmouthensis (WHITE, 1935) WHITE, 1956
   = Pteraspis rostrata var monmouthensis (WHITE, 1935) WHITE, 1958

Genus: Djurniaspis NOVITSKAYA, 1983
 D. prima NOVITSKAYA, 1983 (Type)

Genus: Larnovaspis BLIECK, 1984
L. kneri (LANKESTER, 1868) BLIECK, 1984
= Scaphaspis kneri LANKESTER, 1868
= Pteraspis kneri (LANKESTER, 1868) ALTH, 1874
L. major (ZYCH, 1927) BLIECK, 1984
  = Pteraspis lerichei sp. n. mut. major, ZYCH, 1927
L. iwaniensis (BROTZEN, 1933)
  = Pteraspis iwaniensis BROTZEN, 1933
L. stensioi (WHITE, 1935) BLIECK, 1984 (Type)
= Pterapsis stensioi WHITE, 1935
L. depressa (STENSIO, 1958)
  = Plesiopteraspis? depressa STENSIO, 1958
L? brotzeni (STENSIO, 1958) BLEICK, 1984
= Pteraspis brotzeni STENSIO, 1958
= Pteraspis dobrowlanyensis STENSIO, 1958
L. goujeti (BLIECK, 1982) BLEICK, 1984
= Podolaspis goujeti BLEICK, 1982
 L. mogielnensis BLIECK, 1984
  = Pteraspis sturi ALTH sp., mut. major mut. n. (non Pteraspis major ALTH), ZYCH, 1927
  = Pteraspis lerichei sp. n. mut. major mut. n. (non Pteraspis major ALTH), ZYCH, 1927

Genus: Zascinaspis STENSIO, 1958
 Z. heintzi (BROTZEN, 1936) STENSIO, 1958 (Type)
  = Pteraspsi magnipienalis BROTZEN, 1936)
  = Brachipteraspis heintzi BROTZENI, 1936
  = Brachipteaspis grossi BROTEZEN, 1936
  = Zascinaspis obtusirostrata STENSIO, 1958
Z. bryanti (BROTZEN, 1936)
  = Brachipteraspis (?) bryanti BROTZEN, 1936

SUBORDER: DORYASPIDIDA, HEINTZ, 1962

Family: DORYASPIDIDAE, Heintz, 1962

Genus: Doryaspis WHITE, 1935
 = Ennosveaspis STENSIO, 1964
 = Grumantaspis OBRUCHEV, 1964
= Scaphaspis LANKESTER, 1884
D. nathorsti (LANKESTER, 1884) WHITE, 1935 (Type)
   = Scaphaspis nathorsti LANKESTER, 1884
   = Pteraspis nathorsti (LANKESTER, 1884) WOODWARD, 1890
 D. lyktensis (HEINTZ, 1960)
  = Pteraspis lyktensis HEINTZ, 1960
 D. minor (HEINTZ, 1960)
  = Pteraspis minor HEINTZ, 1960
 D. arctica PERNEGRE, (2002) 2003
 D. gorenhorgensis PERNEGRE, 2005

ORDER: CARDIPELTIFORMES TARLO, 1962
= CARDIPELTIDA STENSIO, 1958

Family: CARDIPELTIDAE Bryant, 1933

Genus: Cardipeltis BRANSON & MEHL, 1931
 C. wallacii BRANSON & MEHL, 1931 (Type)
   = Cardipeltis sinclairi BRYANT, 1933
   = Cardipeltis oblongus BYRANT, 1933
 C. bryanti DENISON, 1966
 C. richardsoni DENISON, 1966
C. sp

ORDER: TRAQUAIRASPIDIFORMES
= PHIALASPIDAE WHITE, 1946
= PHIALASPIFORMES BERG, 1955
= TRAQUAIRASPIDA STENSIO, 1958

Family: TRAQUAIRASPIDIDAE Kiaer, 1932

Genus: Traquairaspis KIAER, 1932
 T. campbelli (TRAQUAIR, 1913) KIAER, 1932 (Type)
   = Phialaspis pockocki var cowiensis WHITE, 1946
 T. pococki (WHITE, 1946) Squirrell & Downing, 1969
 T. symondsi (LANKESTER, ) Karatajute-Talimaa, 1983
 T. angusta DEINSON, 1963
 T. denisoni DINELEY, 1964
 T? adunata DINELEY & Loeffler, 1976
 T? guttata DINELEY & Loeffler, 1976
 T? retusa DINELEY & Loeffler, 1976
 T? pustulata DINELEY & Loeffler, 1976
 T? broadi DINELEY & Loeffler, 1976

Family: PHIALASPIDIDAE White, 1946

Genus: Phialaspis WILLS, 1935
 P. symondsi (LANKESTER, 1866) WILLS, 1935 (Type)
= Cyathaspis ( ?) symondsi LANKESTER, 1866
= Traquaraspis symondsi (LANKESTER, 1866) WHITE & TOOMBS, 1948

Family: WEIGELTASPIDIDAE Brotzen, 1933

Genus: Weigeltaspis BROTZEN, 1933
 W. alta BROTZEN, 1933 (Type)
 W. brotzeni HALSTEAD TARLO, 1964
 W. godmani HALSTEAD TARLO, 1964
 W. heintzi HALSTEAD TARLO, 1964
W. sp

Family: NATALASPIDIDAE Halstead, 1993

Genus: Lankesteraspis
 L. mackenziensis (DINELEY & LOEFFLER, 1976)
= Traquairaspis? mackenziensis DINELEY & LOEFFLER, 1976
 L. lemniscata (DINELEY & LOEFFLER, 1976)
= Traquairaspis? lemniscata DINELEY & LOEFFLER, 1976
 L. poolei (DINELEY & LOEFFLER, 1976)
  = Traquairaspis poolei DINELEY & LOEFFLER, 1976

ORDER: PSAMMOSTEIFORMES BERG, 1940
= DREPANASPIDA STENSIO, 1958

SUBORDER: PSAMMOSTEIDA KIAER, 1932
= PSAMMOSTEIDAE TRAQUAIR, 1896

Family: DREPANASPIDAE Traquair, 1899, emend WHITE, 1935

Genus: Drepanaspis SCHLUTER, 1887
 D. carteri (McCOY, 1851) HALSTEAD TARLO, 1961
   = Steganodictyum carteri McCOY, 1851
   = Cephalaspis (?) carteri (McCOY, 1851) LANKESTER, 1870
   = Cephalaspis carteri (McCOY, 1851) WOODWARD, 1891
   = Pteraspis carteri (McCOY, 1851) COLLINS, 1893
 D. gemundensis SCHLUTER, 1887 (Type)
 D.  schrieli GROSS, 1933
 D. lipperti GROSS, 1937
 D. jaegeri HALSTEAD TARLO, 1964
 D. edwardsi HALSTEAD TARLO, 1964

Family: GUERICHOSTEIDAE Halstead Tarlo, 1964

Genus: Guerichosteus HALSTEAD TARLO, 1964
G. heterolepis (PREBRAJENSKY, 1911) BLINSKIY & PINAKHINA, 2018
   = Psammosteus heterolepis PREOBRAJENSKY, 1911
   = Schizosteus (?) heterolepis (PREBRAJENSKY, 1911) OBRUCHEV, 1940
   = Schizosteus heterolepis (PREOBRAJENSKY, 1911) HALSTEAD TARLO, 1964
G. kozlowskii HALSTEAD TARLO, 1964 (Type)
 G. kotanskii HALSTEAD TARLO, 1964
 G. kulczyckii HALSTEAD TARLO, 1964
 G. lefeldi HALSTEAD TARLO, 1964
 G. toriensis MARK-KURIK, 1965

Genus: Hariosteus HALSTEAD TARLO, 1964
 H. kielanae HALSTEAD TARLO, 1964 (Type)
 H. lobanowskii HALSTEAD TARLO, 1964

Family: PSAMMOLEPIDIDAE Tarlo, 1962

Genus: Psammolepis AGASSIZ, 1845
 P. paradoxa (AGASSIZ, 1844) AGASSIZ, 1845 (Type)
   = Psammolepis paradoxus AGASSIZ, 1844
 P. undulata undulata (AGASSIZ, 1844) AGASSIZ, 1845
   = Placosteus undulates AGSSIZ, 1844
P. arctica (KIAER, 1915) HALSTEAD TARLO, 1964
 = Psammosteus arcticus KAIER, 1915
P? granulata (McCOY, 1848) HALSTEAD TARLO, 1965
   = Psammosteus granulatus McCOY, 1848
P. groenlandica HALSTEAD TARLO, 1964
 P. proia MARK-KURIK, 1965
 P. abavica MARK-KURIK, 1965
 P. venyukovi OBRUCHEV, 1965
 P. alta OBRUCHEV, 1965
 P. aerate OBRUCHEV, 1965

Family: PYCNOSTIDAE Tarlo, 1962

Genus: Ganosteus ROHON, 1901
G. stellatus ROHON, 1901 (Type)
   = Ganosteus tuberculatus GROSS, 1933
 G. artus MARK-KURIK, 1965
 G. obtusus MARK-KURIK, 1965

Genus: Pycnolepis HALSTEAD TARLO, 1964
P. splendens (EICHWALD, 1844) HALSTEAD TARLO, 1964 (Type)
= Chirolepis splendens EICHWALD, 1844
= Schizosteus (?) splendens (EICHWALD, 1844) OBRUCHEV, 1940
= Schizosteus splendens (EICHWALD, 1844) OBRUCHEV, 1958
= Cheirolepis unilateralis EICHWALD, 1844
= Microlepis lepidus EICHWALD, 1844
= Microlepis exillis EICHWALD, 1844
= Psammosteus arenatus AGASSIZ, 1845
= Psammosteus undulates AGASSIZ, 1845
= Psammosteus meandrinus AGASSIZ, 1845

Genus: Pycnosteus PREOBRAJENSKI, 1911
P. tuberculatus (ROHON, 1901) OBRUCHEV, 1940
   = Ganosteus tuberculatus ROHON, 1901
P. palaeformis PREOBRAJENSKI, 1911
  = Psammosteus imperfectus PREOBRAZHENSKY, 1911
  = Schizosteus (?) imperfectus (PREOBRAZHENSKY, 1911) OBRUCHEV, 1940
  = Pycnosteus imperfectus (PREOBRAZHENSKY, 1911) MARK, 1956
P. splendens (EICHWALD, 1844)
P. obruchevi HALSTEAD TARLO, 1964
P. nathorsti OBRUCHEV, 1965
P. pauli MARK-KURIK, 1965

Genus: Yoglinia OBRUCHEV, 1943
 Y. bergi OBRUCHEV, 1943 (Type)
   = Psammosteus bergi (OBRUCHEV, 1943) OBRUCHEV & MARK-KURIK, 1965

Family: PSAMMOSTEIDAE Traquair, 1896

Genus: Crenosteus HALSTEAD TARLO, 1964
 C. levis OBRUCHEV, in HALSTEAD TARLO, 1964 (Type)

Genus: Oredezhosteus MOLOSHNIKOV, 2009a
O. livonicus (OBRUCHEV & MARK-KURIK, 1965) MOLOSHNIKOV, 2009a (Type)
= Psammosteus livonicus OBRUCHEV & MARK-KURIK, 1965
O. kuleshovi MOLOSHNIKOV, 2009a

Genus: Psarkosteus DEC, 2020
P. mediocris DEC, 2020 (Type)

Incertae sedis

Genus: Schizosteus OBRUCHEV, 1940
 S. striatus (GROSS, 1933) OBRUCHEV, 1940
   = Psammolepis striata GROSS, 1933
 S. asatkini OBRUCHEV, 1940
 S. wellsi HALSTEAD TARLO, 1964
S. shkurlatensis MOLOSHNIKOV, 2009b

Genus: Schizosteus non OBRUCHEV, 1940
S. perneri (RUZIKA, 1929) OBRUCHEV, 1940
   = Psammosteus (Ganosteus) perneri RUZICKA, 1929
   = Schizosteus (?) perneri (RUZICKA, 1940) OBRUCHEV, 1940

Genus: Tartuosteus OBRUCHEV, 1961
 T. giganteus (GROSS, 1933) OBRUCHEV, 1961 (Type)
   = Psammolepis gigantea GROSS, 1933
 T. luhai MARK-KURIK, 1965
 T. maximus MARK-KURIK, 1965

Subfamily: Incertae sedis

Genus: Vladimirolepis GLINSKIY, 2018
V. proia (MARK-KURIK, 1965) GLINSKIY, 2018 (Type)
= Psammolepis proia MARK-KURIK, 1965

Subfamily: PLACOSTEINAE Glinskiy, 2018

Genus: Placosteus AGASSIZ, 1845  
 = Placosteus AGASSIZ 1833-1843 (nomen nudum)
P. undulatus AGSSIZ, 1844 (Type)
= Psammolepis undulata undulata (AGASSIZ, 1844) AGASSIZ, 1845
= Psammolepis undulata (AGASSIZ, 1845) GROSS, 1933
P. alatus (MARK-KURIK, 1965) GLINSKIY, 2018
= Psammolepis alata OBRUCHEV, 1958 (nomen nudum)
= Pammolepis alata MARK-KURIK, 1965

Subfamily: PSAMMOSTENINAE Traquair, 1896

Genus: Elgaia GLINSKIY, 2018
E. luhai (MARK-KURIK, 1965) GLINSKIY, 2018 (Type)
= Tartuosteus luhai OBRUCHEV, 1958 (nomen nudum)
= Tartuosteus luhai MARK-KURIK, 1965

Genus: Karelosteus OBRUCHEV, 1933
 K. weberi OBRUCHEV, 1933 (Type)

Genus: Psammosteus AGASSIZ, 1845
 P. meandrinus AGASSIZ, 1845 (Type)
 P. megalopteryx (TRAUTSCHOLD, 1880) GURICH, 1891
   = Coccosteus megalopteryx TRAUTSCHOLD, 1880
   = Psammosteus taylori TRAQUAIR, 1894
 P. anglicus TRAQUAIR, 1898
P. falcatus GROSS, 1942
 P. praecursor OBRUCHEV, 1947
 P. markae TARLO, 1961
  = Psamosteus paradoxus AGASSIZ, 1845
  = Dyptchosteus tessellates PREOBRAJENSKY, 1911
  = psammosteus tesselatus (PREOBRAJENSKY, 1911) EASTMAN, 1917
P. kiaeri HALSTEAD TARLO, 1964
P. pectinatus OBRUCHEV, 1965
P. asper OBRUCHEV, 1965
P. tchernovi OBRUCHEV, 1965
P. waltergrossi HALSTEAD TARLO, 1965
  = Psammosteus grossi OBRUCHEV, 1947
  = Psammosteus falcatus OBRUCHEV, 1965
P. ramosus GLINSKIY & NILOV, 2017
P. sp

Genus: Rohonosteus HALSTEAD TARLO, 1964
 R. ornatus (ROHON, 1899) HALSTEAD TARLO, 1964 (Type)
   = Psammosteus ornatus ROHON, 1899
   = Psammolepis ornata (ROHON, 1899) GROSS, 1933
   = Tartusteus (?) ornatus (ROHON, 1899) OBRUCHEV, 1961
R. complicatus (KIAER, 1915) HALSTEAD TARLO, 1964
   = Psammosteus complicatus KIAER, 1915

Genus: Traquairosteus HALSTEAD TARLO, 1964
 T. pustulatus (TRAQUAIR, 1897) HALSTEAD TARLO, 1964 (Type)
   = Psammosteus pustulatus TRAQUAIR, 1897
= ?Traquairosteus ? falcatus (OBRUCHEV n GROSS, 1942
T? kiaeri (HALSTEADTATLO, 1964
T? pectinatus OBRUCHEV, 1965
T? ramosus GLINSKIY, 2017

Family: OBRUCHEVIIDAE Halstead Tarlo, 1965

Genus: Obruchevia WHITLEY, 1940
= Asphidophorus OBRUCHEV, 1935 non
 O. heckeri (OBRUCHEV, 1935) WHITLEY, 1940 (Type)
   = Aspidophorus heckeri OBRUCHEV, 1935
   = Obruchevia (Aspidosteus) heckeri (OBRUCHEV, 1935) HALSTEAD TARLO, 1964

Genus: Perscheia ELLIOITT, MARK-KURIK, & DAESCHLER, 2009
P.  pulla ELLIOITT, MARK-KURIK, & DAESCHLER, 2009 (Type)

Family: ASPIDOSTEIDAE Berg, 1955

Genus: Aspidosteus OBRUCHEV, 1941
 A. heckeri OBRUCHEV, 1941 (Type)

ORDER: AMPHIASPIDIFORMES BERG, 1940

SUBORDER: AMPHIASPIDIDA OBRUCHEV, 1938

Family: AMPHIASPIDIDAE Obruchev, 1938

Genus: Amphiaspis OBRUCHEV, 1938
 A. argos OBRUCHEV, 1938 (Type)

Genus: Amphoraspis NOVITSKAYA & KARATAJUTE-TALIMAA, 1989
 A. stellata NOVITSKAYA & KARATAJUTE-TALIMAA, 1989 (Type)

Family: SIBERIASPIDIDAE Novitskaya, 1968
= Family: APHATASPIDIDAE Novitsakaya, 1971

Genus: Aphataspis OBRUCHEV, 1964
 A. kiaeri OBRUCHEV, 1964 (Type)

Genus: Argyriaspis NOVISKAYA, 1971
 A. tcherkesovae NOVISKAYA, 1971 (Type)

Genus: Putoranaspis OBRUCHEV, 1964
 P. prima OBRUCHEV, 1964 (Type)

Genus: Siberaspis OBRUCHEV, 1964
 S. plana OBRUCHEV, 1964 (Type)

Family: OLBIASPIDIDAE Obruchev, 1964

Genus: Kureykaspis NOVITKAYA, 1968
 K. salebrosa NOVITKAYA, 1968 (Type)

Genus: Olbiaspis OBRUCHEV, 1964
 O. coalasensis OBRUCHEV, 1964 (Type)
 O. latissima NOVITSKAYA, 1986

Gen. sp indet.

Family: ANGARASPIDIDAE Halstead, 1993

Genus: Angaraspis OBRUCHEV, 1964
 A. urvantzevi OBRUCHEV, 1964 (Type)

Family: GABREYASPIDIDAE Novitskaya, 1968

Genus: Gabreyaspis NOVITSKAYA, 1968
 G. tarda NOVITSKAYA, 1968 (Type)

Genus: Prosarctaspis NOVITSKAYA, 1968
 P. taimyrica NOVITSKAYA, 1968 (Type)

Genus: Tareyaspis NOVITSKAYA, 1968
 T. venusta NOVITSKAYA, 1968 (Type)

Family: TUXERASPIDIDAE Novitskaya, 1968

Genus: Dotaspis NOVITSKAYA & HERMAN, 1983
 D. antiqua NOVITSKAYA & HERMAN, 1983 (Type)

Genus: Litotaspis NOVITSKAYA, 1971
 L. septentrionalis NOVITSKAYA, 1971 (Type)

Genus: Tuxeraspis NOVITSKAYA, 1971
T.  varicostata NOVITSKAYA 1971 (Type)

SUBORDER: HIBERNASPIDIDA, OBRUCHEV

Family: HIBERNASPIDIDAE Obruchev, 1938

Genus: Edaphaspis NOVITSKAYA, 1968
 E. bystrowi NOVITSKAYA, 1968 (Type)

Genus: Hibernaspis OBRUCHEV, 1938
 H. macrolepis OBRUCHEV, 1938 (Type)
 H. tenuicristata NOVITSKAYA, 1986
H. sp

SUBORDER: EGLONASPIDIDA TARLO, 1962

Family: EGLONASPIDIDAE Tarlo, 1962

Genus: Eglonaspis OBRUCHEV, 1959
 E. rostrata OBRUCHEV, 1959 (Type)

Genus: Empedaspis NOVITSKAYA, 1971
 E. inermis NOVITSKAYA, 1971(Type)

Genus: ?Gerronaspis NOVITSKAYA, 1971
 G. ?dentata (OBRUCHEV, 1964)  NOVITSKAYA, 1971 (Type)
   = Putoranaspis dentata OBRUCHEV, 1964
G. elgamarkae (MARK-KURIK, 1974) HALSTEAD, 1993

Genus: Lecaniaspis NOVITSKAYA, 1971
 L. lata NOVITSKAYA, 1971 (Type)

Genus: Pelurgaspis OBRUCHEV, 1964
 P. macrorhyncha OBRUCHEV, 1964 (Type)

CLASS: MONORHINA HAECKEL, 1895
= CLASS: CEPHALASPIDOMORPHI KIAER, 1924

SUBCLASS: OSTEOSTRACI LANKESTER, 1868
= CEPHALASPIDES

ORDER: INCERTE SEDIS

Genus: Janaspis KEATING, SANSOM, & PURNELL, 2012
J. newtonensis KEATING, SANSOM, & PURNELL, 2012 (Type)
J. punctata KEATING, SANSOM, & PURNELL, 2012

Genus: Ungulaspis AFANASSIEVA & KARATAJUTE-TALIMAA, 1998
 U. arctoa AFANASSIEVA & KARATAJUTE-TALIMAA, 1998 (Type)

ORDER: TREMATASPIDIFORMES HALSTEAD TARLO, 1967
= SUBORDER: TREMATASPIDOIDEI
= SUBORDER: ACERASPIDA STENSIO, 1958 (partim)
= SUBORDER: TANNUASPIDIDA HALSTEAD-TARLO, 1967
= SUBORDER: TREMATASPIDIDA HEINTZ, 1939
= SUBORDER: DIDYMASPIDIDA HALSTEAD-TARLO, 1939

Family: Incertae sedis

Genus: Rotsikullaspis ROBERTSON, 1938
 R. obrutchevi ROBERTSON, 1938 (Type)
  = Trematasps mickwitzi ROHON, 1892 (partim)
  = ?Dictyolepis bronnii PANDER, 1856
  = ?Dasylepis keyserlingii PANDER, 1856 (partim)

Genus: Septaspis AFANASSIEVA, 2000
 S. pectinata AFANASSIEVA, 2000 (Type)

Genus: Waengsjoeaspis  JANVIER, 1985
 W. vogti (Stensiö, 1932) JANVIER, 1985
= Cephalaspis vogti Stensiö, 1932
W. acutirostris (Stensiö, 1927)
= Cephalaspis? acutirostris Stensiö, 1927
W. excellens (Wängsjö, 1952) JANVIER, 1985 (Type)
= Cephalaspis excellens Wängsjö, 1952
W. nahanniensis ADRIAN & WILSON, 1994

Family: TREMATASPIDAE Woodward, 1891
= Subfamily: TREMATASPIDINAE Woodward, 1891

Genus: Dobraspis MARK-KURIK & JANVIER, 1997
 D. uralensis MARK-KURIK & JANVIER, 1997 (Type)

Genus: Mellitomalepis PANDER, 1856
 M. elegans PANDER, 1856 (Type)

Genus: Odontolodus PANDER, 1856
 O. rootsikillensis PANDER, 1856 (Type)

Genus: Stigmolepis PANDER, 1856
 S. owenii PANDER, 1856 (Type)

Genus: Tremataspis SCHMIDT, 1866
 T. simonsoni ROHON, 1892 (Type)
 T. schmidtii ROHON, 1892
 T. milleri PATTEN, 1931
 T. mammillata PATTEN, 1931
  = Tremataspis scalaris ROBERTSON, 1938
  = Tremataspis panderi ROBERTSON, 1938
 T. rohoni ROBERTSON, 1938
 T. patteni ROBERTSON, 1938
 T. obruchevi AFANASSIVA & KARATAJUTE-TALIMAA, 1998
T. sp

Subfamily: AESTIASPIDINAE Afanssieva, 1996

Genus: Aestiaspis JANVIER & LELIEVRE, 1994
 A. viitaensis JANVIER & LELIEVRE, 1994 (Type)

Subfamily: DARTMUTHIINAE Robertson, 1935
= Family: DARTMUTHIIDAE Robertson, 1935
= Family: SAAREMAASPIDIDAE Stensio, 1958

Genus: Dartmuthia PATTEN, 1931
 D. gemmifera PATTEN, 1931 (Type)
D. sp

Genus: Saaremaaspis ROBERTSON, 1938
 S. mickwitzi (ROHON, 1892) ROBERTSON, 1938 (Type)
  = Tremataspis mickwitzi ROHON, 1892

Subfamily: OESELASPIDINAE Robertson, 1935
= Family: OESELASPIDIDAE Robertson, 1935

Genus: Oeselaspis ROBERTSON, 1935
 O. pustulata (PATTEN, 1931) ROBERTSON, 1935 (Type)
  = Didymaspis pustulata PATTEN, 1931
O. sp

Subfamily: DIDYMASPIDINAE Berg, 1940
= Family: DIDYMASPIDIDAE Berg, 1940

Genus: Didymaspis LANKESTER, 1867
 D. grindrodi LANKESTER, 1867 (Type)

Subfamily: TANNUASPIDINAE Obruchev, 1964
= Family: TANNUASPIDIDAE Obruchev, 1964

Genus: Ilemoraspis OBRUCHEV, 1961
 I. kirkinskayae OBRUCHEV, 1961 (Type)

Genus: Tannuaspis OBRUCHEV, 1956
= Tannuapis AFANASSIEVA & JANVIER, 1985 (sic)
 T. levenkoi OBRUCHEV, 1956 (Type)

Genus: Tuvaspis OBRUCHEV, 1956
 T. margaritae OBRUCHEV, 1956 (Type)

Subfamily: TIMANASPIDINAE emend Halstead, 1993
= Family: TIMANASPIDIDAE Halstead, 1993

Genus: Timanspis OBRUCHEV, 1962
T. kossovoii OBRUCHEV, 1962 (Type)

Subfamily: TYRIASPIDINAE emend Halstead, 1993
= Family: TYRIASPIDIDAE Halstead, 1993

Genus: Tyriaspis HEINTZ, 1967
 T. whitei HEINTZ, 1967 (Type)

ORDER: SCLERODONTIFORMES
= SUBORDER: SCLERODONTIDA HALSTEAD-TARLO, 1967

Family: SCLERODONTIDAE Fowler, 1947

Genus: Sclerodus AGASSIZ, 1839
= Auchenaspis EGERTON (in part) LANKESTER, 1870
= Eukeraspis LANKESTER; ZITTEL, 1887
S. pustuliferus AGASSIZ, 1839 (Type)
  = Auchenaspis (Eukeraspis) pustulifera (AGASSIZ, 1839) LANKESTER, 1870

ORDER: THYESTIIFORMES
= SUBORDER: ACERASPIDA STENSIO, 1958 (partim)
= SUBORDER: THYESTIDA HALSTEAD-TARLO, 1967

Family: THYESTIIDAE Berg, 1940

Genus: Fieldingaspis LANKESTER, 1870
 F. egertoni LANKESTER, 1870 (Type)

Genus: Thyestes EICHWALD, 1854
 T. verrucosus EICHWALD, 1854 (Type)
T. sp

ORDER: ATELEASPIDIFORMES
= SUBORDER: ACERASPIDA STENSIO, 1958 (PARTIM)
= ORDER: CEPHALASPIDIFORMES HALSTEAD TARLO, 1967 (PARTIM)
= SUBORDER: ATELEASPIDIDA (ACERASPIDA) STENSIO, 1958

Family: ATELEASPIDIDAE Traquair, 1899
= Subfamily: ATELEASPINAE Traquair, 1899
= Subfamily: HEMICYCLASPINAE Heintz, 1939

Genus: Aceraspis KIAER, 1911
A. robustus KIAER, 1911 (Type)
= Atelaspis robustus (KIAER, 1911)

Genus: Ateleaspis TRAQUAIR, 1899
 A. tesselata TRAQUAIR, 1899 (Type)
A. sp

Genus: HemicyclaspisLANKESTER, 1870
 H. murchisoni (EGERTON, 1857) LANKESTER, 1870
= Cephalaspis murchisoni EGERTON, 1857
H. sp

Genus: Witaaspis (PANDER, 1856)
 W. schrekii (PANDER, 1856) (Type)

Family: KALANASPIDIDAE Tinn & Märss, 2018

Genus: Kalanaspis TINN & MÄRSS, 2018
K. delectablis TINN & MÄRSS, 2018 (Type)

ORDER: CEPHALASPIDIFORMES HALSTEAD TARLO, 1967
= ORDER: OSTEOSTRACHI LANKESTER, 1868
= ORDER: OLIGOBRANCHIATA STENSIO, 1958
= ORDER: ORTHOBRANCHIATA STENSIO, 1958 (PARTIM)

SUBORDER: CORNUATA JANVIER, 1985
= SUBORDER: ACERASPIDA STENSIO, 1958
= SUBORDER: CEPHALASPIDIDA HEINTZ, 1939
= SUBORDER: MIMETASPIDIDA HALSTEAD-TARLO, 1967

Family: PROCEPHALASPIDIDAE Stensio, 1958
= Suborder: PROCEPHALASPINAE Stensio, 1958

Genus: Auchenaspis EGERTON, 1857
 A. salteri EGERTON, 1857 (Type)

Genus: Procephalaspis DENISON, 1951
 P. oselensis (ROBERTSON, 1939) DENISON, 1951 (Type)
= Cephalaspis oselensis ROBERTSON, 1939

Family: PATTENASPIDIDAE Stensio, 1958

 Genus: Pattenaspis STENISO
P. whitei (STENSIO, 1932)KEATING, SANSOM, & PURNELL, 2012
= Cephalaspis whitei STENSIO, 1932
= Cephalaspis jacki WHITE, 1932
P. acuminata (STENSIO, 1964) (Type)
 P. deltoides (WANGSJO)
 P. divaricata (WANGSJO)
 P. eukeraspidoides (STENESIO)
 P. rogalai (BALABAI, 1962)
  = Cephalaspis rogalia BALABAI, 1962
 P. bardenbeueri FRIMAN, 1986
 P. woschmidti FRIMAN, 1986

Family: CEPHALASPIDIDAE Agassiz, 1843
= Family: CEPHALASPIDIENS Janvier, 1985
= Subfamily: CEPHALASPIDINAE Agassiz, 1843
= Family: MIMETASPIDIDAE Stensio, 1958

Genus: Cephalaspis AGASSIZ, 1835
 C. lyelli AGASSIZ, 1835 (Type)
 C. jacki
 C. dawsoni LANKETER, 1870
 C. laticeps TRAQUAIR, 1890
 C. jexi TRAQUAIR, 1893
 C. teisseyeri var. major ZYCH
 C? watneliei STENSIO, 1927
 C. cradleyensis STENSIO, 1932
 C? diensti GROSS, 1933
 C. wyomingensis BRYANT, 1933
 C. patteni ROBERTSON, 1936
 C. canadensis ROBERTSON, 1936
 C. acadia ROBERTSON, 1936
C? curta WANGSJO, 1952
 C? producta WAGSJO, 1952
 C. brevirostris DEINSON, 1952
 C. novaescotiae DENISON, 1955
C. rogalai BALABAI, 1962 (nomen dubium)
 C. felicaie BALABAI, 1962 (nomen dubium)
 C. major BALABAI, 1962 (nomen dubium)
 C. sjoestremi BALABAI, 1962 (nomen dubium)
C. dniestrensis JANVIER, 1981
 C. cwmmillensis WHITE & TOOMBS, 1983
 C. abergavenniensis WHITE & TOOMBS, 1983
Subgenus: Cwmaspis WHITE & TOOMBS, 1983
 C. Cwmaspis billcrofti WHITE & TOOMBS, 1983
C. sp

Genus: Hemiteleaspis WESTOLL, 1944-45
 H. heintzi WESTOLL, 1944-45 (Type)

Genus: Hildenaspis JANVIER, 1976
 H. digitalis JANVIER, 1976 (Type)
H. sp

Genus: Machairaspis JANVIER, 1985
M. corystis (WANGSJO, 1952) JANVIER, 1985 (Type)
   = Cephalaspis corystis WANGSJO, 1952
M. sp

Genus: Meterorspis (WANGSJO, 1952)
 M. semicircularis (WANGSJO, 1952) (Type)
 M. moythomais (WANGSJO, 1953)
 M. oblonga

Genus: Mimetaspis STENSIO, 1958
 M. hoeli (STENSIO, 1927) STENSIO, 1958 (Type)
  = Cephalaspis hoeli STENSIO, 1927
 M. glazewskii JANVIER, 1985

Genus: Yvonaspis BELLES-ISLES, 1989
 Y. campbelltonensis (WHITEAVES, 1881) BELLES-ISLES, 1989 (Type)
  = Cephalaspis cambelltonensis WHITEAVES, 1881
 Y. westolli (RUSSELL, 1954) BELLES-ISLES, 1989
  = Cephalaspis westolli RUSSELL, 1954
Y. peninsulae (PAGEAU, 1969) BELLES-ISLES, 1989
  = Cephalaspis peninsulae PAGEAU, 1969

ORDER: ZENASPIDIDA STENSIO, 1958
= SUBORDER: ZENASPIDA STENSIO, 1958

Incertae sedis

Genus: Securiaspis JANVIER, 1985
S. kitchini JANIVER, 1985 (Type)
S. kingi

Genus: Spangenhelmaspis SANSOM, 2009
S. staxrudi (STENSIO, 1927) SANSON, 2009 (Type)
= Cephalaspis staxrudi STENSIO, 1927
S. quadrata (WANGSJO, 1952) SANSON, 2009
= Securiaspis quadrata WANGSJO, 1952

Genus: Wladysagitta sedis mutabilis

Family: ZENASPIDIDAE Stensio, 1958

Subfamily: Unamed A SANSOM, 2009

Genus: Diademaspis JANVIER, 1985
 D. poplinae JANVIER, 1985 (Type)
D. jarviki (WANGSJO, 1952) JANIVER, 1985
= Cephalaspis jarviki WANGSJO, 1952
D. stensioei AFANASSIEVA, 1989
D? mackenziensis ADRIAN & WILSON, 1994
D. janvieri KEATING, SANSOM, & PURNELL, 2012

Genus: Stensiopelta JANVIER, 1985
 S. pustulata JANVIER, 1985 (Type)
   = ‘Cephalaspis woodwardi var. junior’ (labeled)
   = Cephalaspis woodwardi var. subrotunda (labeled) JANIVER, 1985

Genus: Tegaspis WÄNGSJÖ, 1952
T. kolleri (STENSIÖ, 1927)
T. pedata (WÄNGSJÖ, 1952)

Genus: Wladysagitta VOICHYSHYN, 2006
W. acutirostris (STENSIO, 1932) VOICHYSHYN, 2006
= « Cephalaspis » cf. acutirostirs (STENSIO, 1932) JANIVER, 1985
W. janvieri VOICHYSHYN, 2006 (Type)

Genus: Zenaspis LANKESTER, 1870
 Z. salweyi (EGERTON, 1857) LANKESTER, 1870 (Type)
  = Cephalaspis salweyi EGERTON, 1857
 Z. podolica (BALABAI, 1962)
  = Cephalaspis podolica BALABAI, 1962
Z. dzieduszyckii VOICHYSHYN, 2006
Z. waynensis KEATING, SANSOM, & PURNELL, 2012

Subfamily: Unnamed B SANSOM, 2009

ORDER: SCOLENASPIDIFORMES

Family: SCOLENASPIDIDAE Janvier, 1985

Genus: Alaspis ORVIG, 1957
 A. rosmundae (ROBERTSON, 1937) ORVIG, 1957 (Type)
  = Cephalaspis rosamundae ROBRTSON, 1937
 A. macrotuberculata ORVIG, 1957

Genus: Machairaspis JANVIER, 1985
 M. corystis (WANGSJO, 1952) JANVIER, 1985 (Type)
= Cephalaspis corystis WANGSJO, 1952
M. isachseni (STENSIO, 1927) JAINVER, 1985
= Cephalaspis isachseni STENSIO, 1927
 M. battaili JANVIER, 1985
 M. ibex JANVIER, 1990
M. hastata JANVIER, 1990
M. sp

Genus: Scolenaspis
S. signata (WAGSJO, 1952)
 S. mikrolepidota (BALABAI,1962) (nomen dubium)
  = Cephalaspis mikrolepidota BALABAI, 1962

Genus: Victoraspis CARLSSON & BLOM, 2008
V. longicornualis CARLSSON & BLOM, 2008 (Type)

Genus: Ukrainaspis SANSON, 2009
U. kozlowskii (ZYCH, 1937) SANSON, 2009 (Type)
= Cephalaspis  kozlowskii ZYCH, 1937 (nomen dubium)

Genus: Zychaspis JANIVER, 1985
Z. djurinensis (BALBAI, 1962) JANIVER, 1985
= Cephalaspis djurinensis BALBAI, 1962
Z. siemiradzkii JANIVER, 1985 (Type)
= Cephalaspis siemiradzkii var. elgens (Labeled)
Z. granulata Voichyshyn, 1998

Family: SUPERCILASPIDIDAE Scott & Wilson, 2014

Genus: Dentapelta SCOTT& WILSON, 2014
D. loefflerae SCOTT& WILSON, 2014 (Type)

Genus: Glabrapelta SCOTT& WILSON, 2014
G. cristata SCOTT & WILSON, 2014 (Type)
G. minima SCOTT& WILSON, 2014

Genus: Superciliaspis ADRIAN & WILSON, 1994
 S. garbielsei (DINELEY & LOEFFLEY, 1976) ADRIAN & WILSON, 1994 (Type)
  = Cephalaspis? gabrielsei DINELEY & LOEFFLEY, 1976

Family: PARAMETEOSPIDIDAE Sansom, 2009

Subfamily: PARAMETEOSPIDINAE Sansom, 2009

Genus: ParameteoraspisBLIECK, GOUJERT & JANIVER, 1987
= Meteoraspis JAINVER, 1981 non RESSER, 1935
P. laticornis (STENSIO, 1927) BLIECK, GOUJERT & JANIVER, 1987
= Cephalaspis laticornis STENSIO, 1927
= Meteoraspis laticornis (STENSIO, 1927) JANIVER, 1985
P. lata (STENSIO, 1927) BLIECK, GOUJERT & JANIVER, 1987
= Cephalaspis lata STENSIO, 1927
= Meteoraspis lata (STENSIO, 1927) JANIVER, 1985
P. hoegi (STENSIO, 1927) BLIECK, GOUJERT & JANIVER, 1987 (nomen dubium)
= Cephalaspis hoegi STENSIO, 1927 (nomen dubium)
= Meteoraspis hoegi (STENSIO, 1927) JANIVER, 1985 (nomen dubium)
P. borealis (STENSIO, 1927) BLIECK, GOUJERT & JANIVER, 1987 (nomen dubium)
= Cephalaspis borealis STENSIO, 1927 (nomen dubium)
= Meteoraspis borealis (STENSIO, 1927) JANIVER, 1985 (nomen dubium)
 P. gigas (WANGSJO, 1952) BLIECK, GOUJERT & JANIVER, 1987 (Type)
  = Cephalaspis gigas WANGSJO, 1952
 = Metoraspis gigas (WANGSJO, 1952) JAINVER, 1981
 P. oblonga (STENSIO, 1927) BLIECK, GOUJERT & JANIVER, 1987
= Cephalaspis oblongus STENSIO, 1927
= Cephalaspis oblonga (STENSIO, 1927) WANGSJO, 1952
= Meteoraspis oblonga (STENSIO, 1927) JANIVER, 1985
P. lanternaria (WANGSJO, 1952) BLIECK, GOUJERT & JANIVER, 1987
= Cephalaspis lanternaria WANGSJO, 1952
= Meteoraspis lanternaria (WANGSJO, 1952) JANIVER, 1985
P. moythomasi (WANGSJO, 1952) BLIECK, GOUJERT & JANIVER, 1987
= Cephalaspis moythomasi WANGSJO, 1952
= Meteoraspis moythomasi (WANGSJO, 1952) JANIVER, 1985
P. semicircularis (WANGSJO, 1952) BLIECK, GOUJERT & JANIVER, 1987
= Cephalaspis semicircularis WANGSJO, 1952
= Meteoraspis semicircularis (WANGSJO, 1952) JANIVER, 1985
P. caroli (WANGSJO, 1952) BLIECK, GOUJERT & JANIVER, 1987
= Cephalaspis caroli WANGSJO, 1952
= Meteoraspis caroli (WANGSJO, 1952) JANIVER, 1985
P. oberon (JANIVER, 1985) BLIECK, GOUJERT & JANIVER, 1987
= Meteoraspis oberon JANIVER, 1985
P. sp

Subfamily: ESCUMINASPINAE Arsenault  & Janvier, 1995

Genus: Balticaspis LYARSKAYA, 1981
 B. latvica LYARSKAYA, 1981 (Type)

Genus: Escuminaspis ORVIG, 1957
 E. laticeps (TRAQUAIR, 1899) ORVIG, 1957 (Type)
  = Cephalaspis laticeps TRAQUAIR, 1899

Genus: Levesquaspis

Genus: Trewinia sedis mutabilis

ORDER: BENNEVIASPIDIFORMES
= ORDER: ORTHOBRANCHIATA STENSIO, 1958 (partim)
= SUBORDER: BENNEVIASPIDIDA HALSTEAD-TARLO, 1967

Family: BENNEVIASPIDIDAE Denison, 1951
= Subfamily: BENNEVIASPINAE Denison, 1951

Genus: Benneviaspis STENSIO, 1927
 B. holtesdahli STENSIO, 1927 (Type)
 B. lankesteri STENSIO, 1932
 B. anglica STENSIO, 1932
 B.  zychi Afanssieva, 1989
 B. talimaae AFANSSIEVA, 1990
B. sp

Genus: Cithraspis AFANSSIEVA, 1989
 C. polonica (BELLES-ISLES & JANVIER, 1984) AFANSSIEVA, 1989 (Type)
  = Benneviaspis polonica BELLES-ISLES & JANIVER, 1984
 C. junia AFANASSIEVA, 1989

Family: BOREASPIDIDAE Stensio, 1958

Genus: Belonaspis JAINVER, 1985
B. puella (WANGSJO, 1952) JAINVER, 1985 (Type)
= Boreaspis puella WANGSJO, 1952
B. minuta JANVIER, 2005

Genus: Boreaspis STENSIO, 1927
B. rostrata STENSIO, 1927 (Type)
 B. macrorhynchus WANGSJO, 1952
 B. intermedia WANGSJO, 1952
 B. batoides WANGSJO, 1952
 B. ceratops WANGSJO, 1953
 B. jinbsburgi JANVIER, 1977

Genus: Dicranaspis JANIVER, 1985
D. gracilis (WANGSJO, 1952) JANIVER, 1985 (Type)
= Boreaspis gracilis WANGSJO, 1952
 D. triangularis (WANGSJO, 1952) JANIVER, 1985
= Boreaspis triangularis WANGSJO, 1952
D. circinus (WANGSJO, 1952) JANIVER, 1985
= Boreaspis circinus WANGSJO, 1952
D. curtirostris (WANGSJO, 1952) JANIVER, 1985
= Boreaspis curtirostris WANGSJO, 1952
D. spinicornis (WANGSJO, 1952) JANIVER, 1985
= Boreaspis spinicornis WANGSJO, 1952
D. sp

Genus: Spatulaspis JANIVER, 1952
 S. costata (WANGSJO, 1952) JANIVER, 1952 (Type)
= Boreaspis costata WANGSJO, 1952
 S? robusta (WANGSJO, 1952) JANIVER, 1952
  = Boreaspis robusta WANGSJO, 1952
S. sp.

ORDER: KIAERASPIDIFORMES HALSTEAD TARLO, 1967
= ORDER: NECTASPIFORMES STENSIO, 1958
= SUBORDER: KIAERSPIDIDA OBROUCHEV, 1964

Family: KIAERSPIDIDAE Stensio, 1932
= Subfamily: KIAERASPINAE Stensio, 1932

Genus: Kiaeraspis STENSIO, 1927
 K. auchenaspidoides STENSIO, 1927 (Type)

Genus: Norselaspis JANVIER, 1981
 N. glacialis JANVIER, 1981 (Type)

Superfamily:  AXINASPIDOIDEA Janvier, 1985

Family: AXIANASPIDIDAE Janvier, 1985

Genus: AxinaspisWANGSJO, 1952
 A. whitei WANGSJO, 1952
A. sp

Family: ACROTOMASPIDIDAE Obrouchev

Subfamily: ACROTOMASPIDINAE Obrouchev

Genus: AcrotomaspisWANGSJO, 1952
 A. instabilis WANGSJO, 1952 (Type)

Genus: Gustavaspis JANVIER, 1981
 G. trinodis (WANGSJO, 1953) JANVIER, 1981 (Type)

Subfamily; NECTASPIDINAE Stensio, 1958
= Family: NECTASPIDIDAE Stensio, 1958

Genus: Nectaspis WANGSJO, 1952
N. peltata WANGSJO, 1952 (Type)
N. areoltata WANGSJO, 1952
N. dellei  WANGSJO, 1952

ORDER: JAMOYTIIFORMES TARLO, 1967

Family: JAMOYTIIDAE White, 1946

Genus: Jamoytius WHITE, 1946
 J. kerwoodi WHITE, 1946 (Type)

Family: ACHANARELLIDAE Newman, 2002

Genus: Achanarella NEWMAN, 2002
 A. trewini NEWMAN, 2002 (Type)

ORDER: ENDEOLEPIDIDORMES BERG, 1940

Family: ENDEIOLEPIDIDAE Stensio, 1939

Genus: Endeiolepis STENSIO, 1939
 E. aneri STENSIO, 1939 (Type)

ORDER: BIRKENIIFORMES BERG, 1940
= ORDER: BIRKENIIDA BERG, 1937

INCERTAE SEDIS

Genus: Kerreralepis BLOM, 2012
K. carinata BLOM, 2012 (Type)

Family: BIRKENIIDAE Traquiar, 1899

Genus: Birkenia TRAQUAIR, 1899
 B. elegans TRAQUAIR, 1899 (Type)
B. robusta BLOM, MARSS & MILLER, 2002 (for 2001)
B. sp

Genus: Hoburgilepis BLOM, MARSS & MILLER, 2002 (for 2001)
 H. papillata BLOM, MARSS & MILLER, 2002 (for 2001) (Type)

Genus: Vilkitskilepis MARSS, 2002
 V. valentinae MARSS, 2002 (Type)

Family: LASANIIDAE Abel, 1919

Genus: Lasanius TRAQUAIR, 1899
 L. problimeaticus TRAQUAIR, 1899 (Type)
L.  aramatus TRAQUAIR, 1899

Family: RHYNCHOLEPIDIDAE Kier, 1924

Genus: Maurylepis BLOM, MARSS & MILLER, 2002 (for 2001)
 M. lacrimanus BLOM, MARSS & MILLER, 2002 (for 2001) (Type)

Genus: Rhyncholepis KIAER, 1911
= Anaspis ROBERTSON, 1941 non GEOGGREY, 1762
Saarolepis ROBERTSON, 1945
R. parvulus KIAER, 1911 (Type)
R. oeselensis (ROBERTSON, 1941) ROBERTSON, 1980
=  Saarolepis oeselensis (ROBERTSON, 1941) ROBERTSON, 1945
  = Anaspis oeselensis ROBERTSON, 1941
R  butriangula BLOM, MARSS & MILLER, 2002 (for 2001)

Genus: Rytidolepis PANDER, 1856
R. quenstedtii PANDER, 1856 (Type)

Genus: Schidiosteus PANDER, 1856
S. mustelensis PANDER, 1856 (Type)
  = Rhyncholepis (Saarolepis) oeselensis (ROBERTSON), RITICHIE, 1980 (referred)

Genus: Silmalepis BLOM, MARSS & MILLER, 2002 (for 2001)
 S. erinacea BLOM, MARSS & MILLLER, 2002 (for 2001) (Type)

Genus: Vesikulepis BLOM, MARSS & MILLER, 2002 (for 2001)
 V. funiforma BLOM, MARSS & MILLER, 2002 (for 2001) (Type)

Family: PTERYGOLEPIDIDAE Obruchev, 1964

Genus: Pterygolepis COSSMANN, 1920
 P. nitida (KIAER, 1911) COSSMANN, 1920 (Type)
  = Pterolepis nitidus KIAER, 1911

Family: PHARYNGOLEPIDIDAE Kier, 1924

Genus: Pharyngolepis KIAER, 1911
 P. oblongus KIAER, 1911 (Type)
  = Pharyngolepis kiaeri SMITH, 1956
 P. ?heintzi RITCHIE, 1964 

Family: TAHULALEPIDIDAE Blom, Marss & Miller, 2002 (for 2001)

Genus: Tahulalepis BLOM, MARSS & MILLER, 2002 (for 2001)
 T. elongituberculata BLOM, MARSS & MILLER, 2002 (for 2001) (Type)
 T. kingi (WOODWARD, 1947) BLOM, MARSS & MILLER, 2002 (for 2001)
   = Birkenia kingi WOODWARD, 1947

Family: SEPTENTRIONIIDAE Blom, Marss & Miller, 2002 (for 2001)

Genus: Liivlepis BLOM, MARSS & MILLER, 2002 (for 2001)
 L. curvata BLOM, MARSS & MILLER, 2002 (for 2001) (Type)

Genus: Manbrookia BLOM, MARSS & MILLER, 2002 (for 2001)
 M. asperella BLOM, MARSS & MILLER, 2002 (for 2001) (Type)

Genus: Septentrionia BLOM, MARSS & MILLER, 2002 (for 2001)
 S. lancifera BLOM, MARSS & MILLER, 2002 (for 2001) (Type)
 S. mucronata BLOM, MARSS & MILLER, 2002 (for 2001)
 S. dissimilis BLOM, MARSS & MILLER, 2002 (for 2001)
 S. seducta BLOM, MARSS & MILLER, 2002 (for 2001)

Genus: Spokoinolepis BLOM, MARSS & MILLER, 2002 (for 2001)
 S. alternans BLOM, MARSS & MILLER, 2002 (for 2001) (Type)

Genus: Tripleylepis MILLER, MARSS & BLOM, 2004
T. juncta MILLER, MARSS & BLOM, 2004 (Type)
T. concatenate MILLER, MARSS & BLOM, 2004

Family: EUPHANEROPIDAE Woodward, 1900

Genus: Cornovichthys NEWMAN & TREWIN, 2001
 C. blaauweni NEWMAN & TREWIN, 2001 (Type)

Genus: Euphanerops WOODWARD, 1900
= Legendrelepis ARSENAULT & JANVIER, 1991
 E. longaevus WOODWARD, 1900 (Type)
= Legendrelepis parenti ARSENAULT & JANVIER, 1991

Family: Incertae sedis

Genus: Cowielepis BLOM, 2008
C. ritchiei BLOM, 2008 (Type)

Genus: Ruhnuleps BLOM, MARSS & MILLER, 2002 (for 2001)
 R. longicostata BLOM, MARSS & MILLER, 2002 (for 2001) (Type)

CLASS: GALEASPIDOMORPHI
= CLASS: EUGALEASPIDOMORPHI
= SUPERORDER: GALEASPIDA TARLO, 1967

SUBCLASS: MACROTHYRASPIDES PAN, 1992

ORDER: MACROTHYRASPIDIDA PAN, 1992

Family: MACROTHYRASPIDAE Pan, 1992

Genus: Macrothyraspis PAN, 1992
 M. longicornis PAN, 1992 (Type)
 M. longilanceus WANG, GAI & ZHU, 2005

ORDER: QINGMENASPIDFORMES PAN & WANG, 1981

Family: QINGMENASPIDIDAE Halstead, 1993

Genus: Qingmenaspis PAN & WANG, 1981
 Q. microculus PAN & WANG, 1981 (Type)

ORDER: PENTATHYRASPIDIDA PAN, 1992

Family: PENTATHYRASPIDIDAE Pan, 1992

Genus: Pentathyraspis PAN, 1992
 P. pelta PAN, 1992 (Type)

Family: MICROHOPLONASPIDAE Pan, 1992

Genus: Microhoplonaspis PAN, 1992
 M. microthyris PAN, 1992 (Type)

SUBCLASS: GALEASPIDA HALSTEAD TARLO, 1967
= GALEASPIDFORMES LIU, 1965
= CLASS: GALEASPIDOMORPHI

ORDER: INCERTAE SEDIS

Genus: Bannhuanaspis JANVIER, THANH & PHUONG, 1993
 B. vukhuci JANVIER, THANH & PHUONG, 1993 (Type)

Genus: Diploholcaspis WANG, WANG & ZHU, 2009
D. daleensis WANG, WANG & ZHU, 2009 (Type)

Family: HYPERASPIDIDAE Pan, 1992

Genus: Hyperaspis PAN, 1992
 H. acclivis PAN, 1992 (Type)

ORDER: EUGALEASPIDFORMES (LIU, 1965) LIU, 1980
= ORDER: GALEASPIDIFORMES LIU, 1965
= ORDER: GALEASPIDIDA HALSTEAD-TARLO, 1967

Family: SHUYUIDAE Shan, Zhu, Zhao, Pan, Wang & Gai, 2020

Genus: Meishanaspis WANG, 1991
M. lehmani WANG, 1991 (Type)

Genus: Shuyu GAI, DONOGHUE, ZHU, JANIVER & STAMPANONI, 2011
S. zhejiangensis (PAN, 1986) GAI, DONOGHUE, ZHU, JANIVER & STAMPANONI, 2011 (Type)
= Eugaleaspis zhejiangensis PAN, 1986

Family: EUGALEASPIDIDAE Liu, 1980
= Family: GALEASPIDAE Liu, 1965

Genus: Dunyu ZHU, LIU, JIA & GAI, 2012
D. longiforus ZHU, LIU, JIA & GAI, 2012 (Type)
D. xiushanensis (LIU, 1983) ZHU, LIU, JIA & GAI, 2012
= Eugaleaspis xiushanensis LIU, 1983

Genus: Eugaleaspis LIU, 1980
= Galeaspis LIU, 1965 non IVSHIN, 1962
 E. changi (LIU, 1965) LIU, 1980 (Type)
  = Galeaspis changi LIU, 1965
 E. lianhuashanensis LIU, 1986

Genus: Nochelaspis ZHU, 1992
 N. maendrine ZHU, 1992 (Type)

Genus: Pterogonaspis ZHU, 1992
 P. yuhaii ZHU, 1992 (Type)

Genus: Yunnanogaleaspis PAN & WANG, 1980
Y. major PAN & WANG, 1980 (Type)

Gen. sp indet

Family: SINOGALEASPIDIDAE Pan, 1992
= Family: SINOGALEASPIDAE Pan & Wang, 1980

Genus: Rumporostralis SHAN, ZHU, ZHAO, PAN, WANG & GAI, 2020
R. xikengensis (PAN & WANG, 1980)
= Sinogaleaspis xikengensis PAN & WANG, 1980
R. zhipanensis SHAN, ZHU, ZHAO, PAN, WANG & GAI, 2020

Genus: Sinogaleaspis PAN & WANG, 1980
S. shankouensis PAN & WANG, 1980 (Type)
 S. xikengensis PAN & WANG, 1980
 S. zhejangensis PAN, 1986

Family: TRIDENSASPIDIDAE Pan, 1992
= Family: TRIDENSAPIDAE Liu, 1986

Genus: Tridensaspis LIU, 1986
 T. magnoculus LIU, 1986 (Type)

Incertae sedis

Genus: Anjiaspis GAI & ZHU, 2005
A. reticularis GAI & ZHU, 2005 (Type)

ORDER: POLYBRANCHISPIDOFORMES LIU, 1965
= SUPERORDER: POLYBRANCHIASPIDIDA JANVIER, 1996

Incertae sedis

Genus: Jiaoyu LIU, ZHU, LIN, LU & GAI, 2019
J. imperfectus LIU, ZHU, LIN, LU & GAI, 2019 (Type)

Genus: Konoceraspis PAN, 1992
 K. grandoculus PAN, 1992 (Type)

Genus: Wenshanaspis ZHAO, ZHU & JIA, 2002
 W. zhichangensis ZHAO, ZHU & JIA, 2002 (Type)

Family: POLYBRANCHIASPIDIDAE Pan, 1992
= Family: POLYBRANCHIASPIDAE Liu, 1965

Genus: Altigibbaspis LIU, GAI & ZHU, 2017
A. huiqingae LIU, GAI & ZHU, 2017 (Type)

Genus: Polybranchiaspis LIU, 1965
 P. liaojaoshensis LIU, 1965 (Type)
  = Polybranchiaspis gracilis CAO, 1985
  = Polybranchiaspis yunnanensis CAO, 1985
  = Polybranchiaspis rhombicus CAO, 1985
  = Polybranchiaspis sinensis CAO, 1985
 P.  minor LIU, 1975
 P.  miandiancunensis PAN & WANG, 1978
P. sp

Genus: Siyingia WANG & WANG, 1982
 S. altuspinosa WANG & WANG, 1982 (Type)
 S. perlatuspinosa SI, GAI, & ZHAO, 2015

Gen. sp indet.

Family: XIUSHUIASPIDIDAE Pan & Wang, 1983

Genus: Microphymaspis WANG, WANG, ZHANG, WANG & ZHU, 2002
= Platycaraspis WANG, WANG, ZHANG, WANG & ZHU, 2002
M. pani WANG, WANG, ZHANG, WANG & ZHU, 2002 (Type)
= Platycaraspis tianshanensis WANG, WANG, ZHANG, WANG & ZHU, 2002

Genus: Xiushuiaspis PAN & WANG, 1983
 X. jiangxiensis PAN & WANG, 1983 (Type)
 X. ganbiensis PAN & WANG, 1983

Family: DAYONGASPIDAE Pan & Zheng, 1985

Genus: Dayongaspis PAN & ZHENG, 1985
 D. hunanensis PAN & ZHENG, 1985 (Type)

Family: GERASPIDIDAE Pan & Chen, 1993

Genus: Geraspis PAN & CHEN, 1993
 G. rara PAN & CHEN, 1993 (Type)

Family: ZHAOTONGASPIDAE Wang & Zhu, 1994

Genus: Antiquisagittaspis LIU, 1985
A. cornata LIU, 1985 (Type)

Genus: Zhaotongaspis WANG & ZHU, 1994
 Z. janvieri WANG & ZHU, 1994 (Type)

Family: GUMUASPIDAE Gai, Lu, Zhao & Zhu, 2018

Genus: Gumuaspis LIU, 1992
 G. rostrata LIU, 1992 (Type)

Genus: Nanningaspis GAI, LU, ZHA & ZHU, 2018
N. zengi GAI, LU, ZHA & ZHU, 2018 (Type)

Genus: Platylomaspis GAI, LU, ZHA & ZHU, 2018
P. serratus GAI, LU, ZHA & ZHU, 2018 (Type)

Genus: Pseudolaxaspis GAI, LU, ZHA & ZHU, 2018
P. rostrata (LIU, 1975) GAI, LU, ZHA & ZHU, 2018 (Type)
= Laxaspis rostrata LIU, 1975

ORDER: DUYUNASPIDIDA PAN & WANG, 1978

Family: DUYUNOLEPIDIDAE Pan, 1992
= Family: DUYUNOLEPIDAE Pan & Wang, 1978
= Family: DUYUNASPIDA Pan & Wang, 1978

Genus: Duyunolepis PAN & SHITAO, 1982
= Duyunaspis P’AN & WANG, 1978 non ZHANG & QIAN, 1977
 D. paoyangensi (P’AN & WANG, 1978) PAN & SHITAO, 1982 (Type)
  = Duyunaspis paoyangensi P’AN & WANG, 1978

Genus: Lopadaspis WANG, WANG, WANG & ZHANG, 2002
= Discaspis WANG, WANG, WANG & ZHANG, 2001 non LIN, 1988
 L. pinglensis (WANG, WANG, WANG & ZHANG, 2001) WANG, WANG, WANG & ZHANG, 2002 (Type)
   = Discaspis pinglensis WANG, WANG, WANG & ZHANG, 2001

Genus: Neoduyunaspis PAN & WANG, 1978
 N. minuta PAN & WANG, 1978 (Type)

Genus: Paraduyanspis PAN & WANG 1978
P. hezhangensis PAN & WANG, 1978 (Type)

ORDER: HANYANGASPIDIDA PAN & LIU, 1975

Family: HANYANGASPIDIDAE Pan, 1992
= Family: HANYANGASPIDAE Pan & Liu, 1975

Genus: Hanyangaspis PAN & LIU, 1975
 H. guodingshanensis PAN & LIU, 1975 (Type)
 H. chaohuensis (WANG, XIA & CHEN, 1980) WANG, et al, 1980
  = Latirostra chaohuensis WANG, XIA & CHEN, 1980

Genus: Latirostraspis WANG, et al, 1980
 L. chaohuensis WANG et al, 1980 (Type)

Genus: Nanjiangaspis WANG, WANG, ZHANG, WANG & ZHU, 2002
 N. kalpinensis WANG, WANG, ZHANG, WANG & ZHU, 2002 (Type)

Family: XIUSHUIASPIDAE P’an & Wang, 1983

Genus: Xiyuaspis LIU, ZHU, LIN, LU & GAI, 2019
X. zhangi (LU et al. 2007) LIU, ZHU, LIN, LU & GAI, 2019 (Type)
= Nanjianagaspis zhangi LU et al., 2007
= Kalpinolepis zhangi (LU et al., 2007) LIU et al., 2015

ORDER: NANPANASPIFORMES LIU, 1975

Family: NANPANASPIDIDAE Pan, 1992
= Family: NANPANASPIDAE Liu, 1975

Genus: Nanpanaspis LIU, 1965
 N. microculus LIU, 1965 (Type)

ORDER: GALEASPIFORMES LIU, 1965

Gen. sp indet.

Family: GALASPIIDAE Liu, 1965

Genus: Galeaspis LIU, 1965
 G. changi LIU, 1965 (Type)
 G. xujiachongensis LIU, 1975

Genus: Szechuanaspis PAN & WANG, 1975
 S. yanmenpaensis PAN & WANG, 1975 (Type)

Gen. sp indet.

Family: CYCLODISCASPIDIDAE Pan, 1992
= Family: CYCLODISCAPSIDAE Liu, 1975

Genus: Cyclodiscaspis LIU, 1975
 C. ctenus LIU, 1975 (Type)

Genus: Damaspis WANG & WANG, 1982
 D. vartus WANG & WANG, 1982 (Type)

Genus: Dongfangaspis LIU, 1975
 D. major LIU, 1975 (Type)
 D. qujigensis PAN & WANG, 1981
D. sp

Genus: Laxaspis LIU, 1975
 L. qujingensis LIU, 1975 (Type)
 L. yulongssus (LIU, 1975) JANVIER & PHUONG, 1999
  = Polybranchiaspis yulongssus LIU, 1975

ORDER: HUANANASPIFORMES JANVIER, 1975
= HUANANASPIDIDA
= HUANANSPIDS PAN, 1984

Family: HUANNASPIDAE Liu, 1973

Genus: Asiaspis PAN, 1975
 A. expansa PAN, 1975 (Type)

Genus: Diandongaspis LIU, 1975
 D. xishancunensis LIU, 1975 (Type)

Genus: Huananaspis LIU, 1973
 H. wudinensis LIU, 1973 (Type)

Genus: Kwangnanaspis CAO, 1979
 K. subtriangularis CAO, 1979 (Type)

Genus: Macrothvraspis PAN, 1992
 M. longicornis PAN, 1992 (Type)

Genus: Sinoszechuanaspis PAN & WANG, 1975
 S. yanmenpaensis PAN & WANG, 1975 (Type)
 S. gracilis PAN & WANG, 1978

Genus: Stephaspis GAI & ZHU, 2007
S. dipteriga GAI & ZHU, 2007 (Type)

Family: LUNGMENSHANASPIDIDAE Pan, 1992
= Family: LUNGMENSHANASPIDS Pan, 1984

Genus: Lungmenshanaspis PAN & WANG, 1975
 L. kiangyouensis PAN & WANG, 1975 (Type)
 L.yunnanensis WANG, FAN & ZHU, 1996

Family: SANCHASPIDAE Pan & Wang, 1981

Genus: Sanchaspis PAN & WANG, 1981
 S. magalarostrata PAN & WANG, 1981 (Type)

Family: SANQIASPIDAE Liu, 1975

Genus: Sanqiaspis LIU, 1975
 S. rostrata LIU, 1975 (Type)
 S. zhaotongensis LIU, 1975
 S. sichuanensis PAN & WANG, 1978
S. vietnamensis JANVIER, THANH, PHUONG, CLEMENT & PHUONG, 2009

Genus: Wumengshanaspis WANG & LAN, 1984
 W. cuntianensis WANG & LAN, 1984 (Type)

Family: GANTAROSTRATASPIDAE Wang & Wang, 1992

Genus: Gantarostrataspis WANG & WANG, 1992
 G. gengi WANG & WANG, 1992 (Type)

Genus: Rhegmaspis GAI, ZHU, JIA, 7 ZHAO, 2015
R. xiphoidea GAI, ZHU, JIA, 7 ZHAO, 2015 (Type)

Genus: Wumengshanaspis WANG & LAN, 1984
W. cuntianensis WANG & LAN, 1984 (Type)

SUBCLASS: CYCLOSTOMATA

SUPERORDER: PETROMYXONIDA

ORDER: MYXINIFORMES
= Subphylum: Hyperotreti

Incertae sedis

Genus: Myxinedius POPLIN, SOTTY & JANVIER, 2001
M. gononorum POPLIN, SOTTY & JANVIER, 2001 (Type)

Genus: Myxinikela BARDACK, 1991
 M. siroka BARDACK, 1991 (Type)

ORDER: PETROMYZONTIFORMES BERG, 1940

Family: ?

Genus: Priscomyzon GESS, COATES & RUBIDGE, 2006
P. riniensis GESS, COATES & RUBIDGE, 2006 (Type)

Family: HARDISTIELLIDAE Halstead, 1993

Genus: Hardistiella JANVIER & LUND, 1983
 H. montanensis JANVIER & LUND, 1983 (Type)

Family: MAYOMYZONTIDAE Bardack & Zangerl, 1968

Genus: Mayomyzon BARDACK & ZANGERL, 1968
 M. pieckoensis BARDACK & ZANGERL, 1968 (Type)

Family: PIPISCIIDAE Halstead, 1993

Genus: Pipiscius BARDACK & RICHARDSON, 1977
 P. zangerli BARDACK & RICHARDSON, 1977 (Type)

Family: GILPICHTHYIDAE Halstead, 1993

Genus: Gilpichthys BARDACK & RICHARDSON, 1977
 G. greenei BARDACK & RICHARDSON, 1977 (Type)

Family: PETROMYZONTIDAE

Genus: Mesomyzon CHANG, ZHANG & MIAO, 2006
M. mengae CHANG, ZHANG & MIAO, 2006 (Type)

_____________________________________________________________________________________


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