Diapsida (Genus: 114; Species: 129)

CLASS: REPTILIA Laurenti, 1768
= CLASS: MONOCONDYLIA Cope, 1890

SUBCLASS: DIAPSIDA OSBORN, 1903
= PARADIAPSIDA
= INFRASERIES: DIAPSIDA BENTON & NORMAN, in BENTON, 1985
= CLASS: EUOSTEICHTHYES WILEY, 1979 (partim)
= INFRACLASS: CHOANATA
= SUPERDIVISION: AMNIOTA WILEY, 1979
= DIVISION: SAUROPSIDA WILEY, 1979 (sedis mutabilis)

Sauropsida incertae sedis

Incertae sedis
= Subfamily: CHELYPOSUCHINAE Kuhn, 1946
= Family: PALACRODONTIDAE Haughton, 1924
= Family: FREMOUWSAURIDAE Gow, 1992

Genus: Chelyposuchus KUHN, 1939
= Chelyoposaurus HUENE, 1958 (sic)
= Chelyposuchus ROMER, 1966 (sic)
C. crassiquamatus KUHN, 1939 (Type)
Note: was thought to be a placodont. PINNA, 1999 believes otherwise.

Genus: Crurosaurus HUENE, 1902 (nomen dubium)
C. problematicus HUENE, 1902 (Type)
Note: was thought to be a placodont. PINNA, 1999 believes otherwise.

Genus: Dolerosaurus BUTLER, 2013
D. trauthi (HEUNE, 1939) BUTLER, 2013 (Type)
= Francosuchus trauthi HUENE, 1939
= Palaeorhinus? (Francosuchus) trauthi (HUENE, 1939) WESTPHAL, 1976
= Palaeorhinus? trauthi (HUENE, 1939) OLSHEVSKY, 1992

Genus: Entoplastrites HUENE, 1956
E. nuertingensis HUENE, 1956 (Type)

Genus: Horaffia KLEIN & HAGDORN, 2014
H. kugleri KLEIN & HAGDORN, 2014 (Type)

Genus: Microzemiotes BURCH, EDDINS, STOCKER, KLIGMAN, MARSH, PARKER & NESBITT, 2024
M. sonselaensis BURCH, EDDINS, STOCKER, KLIGMAN, MARSH, PARKER & NESBITT, 2024 (Type)

Genus: Palacrodon BROOM, 1906
= Fremouwsaurus GOW, 1992
P. browni BROOM, 1906 (Type)
= Fremouwsaurus geludens GOW, 1992
Note: Broom (1906) placed Palacrodon in Rhynchocephalia; Malan (1963) disagreed and suggested it was either a lizard or procolophonid. Gow (1999) synonymized Fremouwsaurus geludens (Gow, 1992) with Palacrodon. Kligman et al. (2018) place it within Diapsida.
P. parkeri JENKINS, BELL, HANCOX & LEWIS, 2023 (published 2024)
= Palacrodon browni KLIGMAN, MARSH & PARKER, 2018

Genus: Plesiosaurus non CONYBEARE, 1821
P. italicus De ZIGNO 1883 (nomen dubium)

Genus: Psammosaurus MEYER, 1834 non FITZINGER, 1826 (nomen dubium) (Psammosaurus griseus Varanidae)
P. tau MEYER, 1834 (nomen dubium)
P. batachioides MEYER, 1834 (nomen dubium)
P. laticostatus MEYER, 1834 (nomen dubium)
Note: Lacerten MEYER, 1834

Genus: Stauromatodon SOBRAL, SUES & SCHOCH, 2021
S. mohli SOBRAL, SUES & SCHOCH, 2021 (Type)

Genus: Tamaulipasaurus CLARK & HERNANDEZ R., 1994
T. morenoi CLARK & HERNANDEZ R., 1994 (Type)

Gen. sp indet.

ORDER: ARAEOSCELIDA WILLISTON 1913
= ORDER: KADALIOSAURIA CASE, 1915
= ORDER: AREOSCELIA NOPCSA, 1923
= SUBCLASS: ARAEOSCELOMORPHI HAY, 1930
= ORDER: AREOSCELIDIA TATARINOV, 1964
= SUBCLASS: ARAEOSCELOMORPHA KUHN, 1968

Incertae sedis

Genus: Dictybolus OLSON, 1970
D. tener OLSON, 1970 (Type)

Genus: Halgaitosaurus HENRICI, BERMAN, SUMIDA & HUTTENLOCKER, 2023
= Araeoscelida n. sp HUTTENLOCKER, HENRICI, NELSON, ELRICK, BERMAN, SCHLOTTERBECK & SUMIDA, 2018
H. gregarious HENRICI, BERMAN, SUMIDA & HUTTENLOCKER, 2023 (Type)


Gen. sp indet.

SUBORDER: ARAEOSCELOIDEA NOPCSA, 1928
= ORDER: ARAEOSCELOIDEA NOPCSA, 1928

Incertae sedis

Genus: Spinoequalis DEBRAGA & REISZ, 1995
= Spinoequalis DILKES & DEBRAGA, 1993 (nomen nudum)
S. schultzi DEBRAGA & REISZ, 1995 (Type)
= Spinoequalis schultziDILKES & DEBRAGA, 1993 (nomen nudum)

Family: PETROLACOSAURIDAE Lane, 1915
= PLESION: PETROLACOSAURIDAE Peabody, 1952

Genus: Petrolacosaurus LANE, 1945
= Podargosaurus LANE, 1945
P. kansensis LANE, 1945 (Type)
= Podargosaurus hibbardi LANE, 1945

Family: ARAEOSCELIDAE Williston, 1910

Genus: Zarcasaurus BRINKMAN, BERMAN & EBERTH, 1984
Z. tanyderus BRINKMAN, BERMAN & EBERTH, 1984 (Type)

Subfamily: ARAEOSCELINAE Williston, 1910
= Family: KADALIOSAURIDAE Case, 1915

Genus: Aphelosaurus GERVAIS, 1859 (nomen dubium)
A. lutevensis GERVAIS, 1859 (Type)

Genus: Araeoscelis WILLISTON, 1910
= Ophiodeirus BROOM, 1913
= Tomicosaurus HAY, 1929
A. gracilis WILLISTON, 1910 (Type)
A. casei (BROOM, 1913) VAUGHN, 1955
= Ophiodeirus casei BROOM, 1913

Genus: Kadaliosaurus CREDNER, 1889
= Cadalosaurus BOULENGER, 1891 (sic)
K. priscus CREDNER, 1889 (Type)

Gen. sp indet.

CLADE NAME: NEOVARANOPIA emend SPINDLER, WERNEBURG, SCHNEIDER, LUTHARDT, ANNACKER & RÖßLER, 2019
= CLADE NAME: NEOVARANOPSIA SPINDLER, WERNEBURG, SCHNEIDER, LUTHARDT, ANNACKER & RÖßLER, 2019

Family: VARANOPIDAE emend Romer & Price, 1940, REISZ & DILKES, 2003
= Family: VARANOPSEIDAE Romer & Price, 1940

Note: The Varanopidae was originally placed in the pelycosauria, and that had been followed for decades; however, it is now placed in the Diapsida (Ford et al., 2018, MacDougal et al., 2018, and Modesto, 2020)

Genus: Aerosaurus ROMER, 1937
A. greenleeorum ROMER, 1937 (Type)
A. wellesi LANGSTON & REISZ, 1981

Genus: Apsisaurus LAURIN, 1991
A. witteri LAURIN, 1991 (Type)

Genus: Archaeovenator REISZ & DILKES, 2003
A. hamiltonensis REISZ & DILKES, 2003 (Type)

Genus: Ascendosaurus SPINDLER, WERNEBURG, SCHNEIDER, LUTHARDT, ANNACKER & RÖßLER, 2019
A. nestleri SPINDLER, WERNEBURG, SCHNEIDER, LUTHARDT, ANNACKER & RÖßLER, 2019 (Type)

Genus: Dendromaia MADDIN, MANN & HERBERT, 2020
D. unamakiensis MADDIN, MANN & HERBERT, 2020 (Type)

Genus: Eoscansor LUCAS, RINEHART, CELESKEY, BERMAN & HENRICI, 2022
E. cobrensis LUCAS, RINEHART, CELESKEY, BERMAN & HENRICI, 2022 (Type)

Genus: Orovenator REISZ, MODESTO & SCOTT, 2011
O. mayorum REISZ, MODESTO & SCOTT, 2011 (Type)

Genus: Pyozia ANDERSON & REISZ, 2004
P. mesenensis ANDERSON & REISZ, 2004 (Type)

Genus: Ruthiromia EBERTH & BRINKMAN, 1983
R. elcobriensis EBERTH & BRINKMAN, 1983 (Type)

Genus: Thrausmosaurus FOX, 1962
T. serratidens FOX, 1962 (Type)
T. sp

Genus: Nova WONG KEN, REISZ, & MAY, 2010

Gen. sp indet.

Subfamily: MESENOSAURINAE Romer 1956
= Family: MESENOSAURIDAE Romer, 1956

Genus: Cabarzia SPINDLER, WERNEURG & SCHNEIDER, 2019
C. trostheidei SPINDLER, WERNEURG & SCHNEIDER, 2019 (Type)

Genus: Mesenosaurus EFREMOV, 1940
= Mesonosaurus IVAKHENKO & KURZANOV, 1979 (sic)
M. romeri EFREMOV, 1940 (Type)
M. efremovi MAHO, GEE & REISZ, 2019
M. sp

Sufamily: HELEOSAURINAE Haughton, 1924
= Family: HELEOSAURIDAE Haughton, 1924
= Family: HELEOSAURIDAE Haughton, 1924
= Subfamily: MYCTEROSAURINAE Reisz & Berman, 2001
= CLADE NAME: AFROTHYRA SPINDLER, WERNEBURG, SCHNEIDER, LUTHARDT, ANNACKER & RÖßLER, 2019

Genus: Elliotsmithia BROOM, 1937
E. longiceps BROOM, 1937 (Type)

Genus: Heleosaurus BROOM, 1907
= Heliosaurus HUENE, 1956 (sic)
H. scholtzi BROOM, 1907 (Type)
Note: Broom (1907) placed it as a basal diapsid; Carroll (1976) placed it in the eosuchian family Younginidae or possibly as an ancestral archosaurian, whereas Reisz & Modesto (2007) and Botha-Brink et al. (2009) placed it in the family Varanopidae, subfamily Mycterosaurinae. However, because the family Heleosauridae Haughton (1924) is the older name, the subfamily is Heleosauridae and not Mycterosaurinae

Genus: Microvaranops SPINDLER, WERNEBURG, SCHNEIDER, LUTHARDT, ANNACKER & RÖßLER, 2019
M. parentis SPINDLER, WERNEBURG, SCHNEIDER, LUTHARDT, ANNACKER & RÖßLER, 2019 (Type)

Genus: Mycterosaurus WILLISTON, 1915
= Basicranodon VAUGHN, 1958
= Eumatthevia BROOM, 1930
M. longiceps WILLISTON, 1915 (Type)
= Eumatthevia bolli BROOM, 1930
= Basicranodon fortsillensis VAUGHN, 1958
M. sp

Gen. sp indet.

Subfamily: VARANOPIINAE emend Romer & Price, 1940
= Subfamily: VARANOPSIINAE Romer & Price, 1940
= Family: WATONGIIDAE Sigogneau-Russell, 1989
= Subfamily: VARANODONTINAE Reisz & Berman, 2001

Genus: Tambacarnifex BERMAN, HENRICI, SUMIDA, MARTENS, & PELLETIER, 2014
T. unguifalcatus BERMAN, HENRICI, SUMIDA, MARTENS, & PELLETIER, 2014 (Type)

Genus: Varanodon OLSON, 1965
V. agilis OLSON, 1965 (Type)

Genus: Varanops WILLISTON, 1914
V. brevirostris (WILLISTON, 1911) WILLISTON, 1914 (Type)
= Varanosaurus brevirostris WILLISTON, 1911
V. sp

Genus: Watongia OLSON, 1974
W. meieri OLSON, 1974 (Type)
Note: Olson, (1974) originally referred it to Gorgonopsidae (also Gorgonopidae), Carroll (1988) placed it in the Eotitanosuchia, and Reisz & Laurin (2004) placed it in the Varanopidae.

Genus: Nova: MADDIN, EVAND & REISZ, 2005

CLADE NAME: NEOREPTILIA FORD & BENSON, 2020

INFRACLASS: NEODIAPSIDA BENTON, 1985
= STEM-GROUP: NEODIAPSIDA BENTON, 1985
= SUPERDIVISION: NEODIAPSIDA BENTON, 1985

= SUPERLEGION: NEODIAPSIDA BENTON, 1985
= ORDER: NEODIAPSIDA BENTON, 1984

Incertae sedis

Genus: Adelosaurus HANCOCK & HOWSE, 1870
A. huxleyi HANCOCK & HOWSE, 1870 (Type)

Genus: Aenigmasaurus PARRINGTON, 1953 (nomen dubium)
A. grallator PARRINGTON, 1953 (Type)

Genus: Elachistosuchus JANENSCH, 1949
E. huenei JANENSCH, 1949 (Type)
Note: Janensch (1949) placed it as a pseudosuchian archosaur; Walker (1966) placed it as a rhynchocephalian; Chen et al. (2014) recovered it as the sister taxon of Choristodera;  Sobrial et al. (2015) placed it Neodiapsida.

Genus: Lacertulus CARROLL & THOMPSON, 1982 (nomen dubium)
L. bipes CARROLL & THOMPSON, 1982 (Type)

Genus: Lanthanolania MODESTO & REISZ, (2002) 2003
L. ivakhnenkoi MODESTO & REIZSZ, (2002) 2003 (Type)

Genus: Leptocraniopsis DILKES & DEBRAGA, 1993
L. hamiltensis DILKES & DEGRAGA, 1993 (Type)

Genus: Maiothisavros MOONEY, MAHO, BEVITT & REISZ, 2022
M. dianeae MOONEY, MAHO, BEVITT & REISZ, 2022 (Type)

Genus: Plesiosaurus non CONYBEARE, 1821
= Plesiosaurus doedicomus OWEN, 1840

ORDER: EOSUCHIA BROOM, 1914

Incertae sedis

Gen. sp indet.

Family: PALAEAGAMIDAE Huene, 1956

Genus: Palaeagama BROOM, 1926
P. vielhaueri BROOM, 1926 (Type)

PLESION CLAUDIOSAURIDAE BENTON & NORMAN, in BENTON, 1985

Family: CLAUDIOSAURIDAE Carroll, 1981

Genus: Claudiosaurus CARROLL, 1981
C. germaini CARROLL, 1981 (Type)

PLESION: GALESPHYRIDAE BENTON & NORMAN, in BENTON, 1985

Family: GALESPHYRIDAE Currie, 1981

Genus: Galesphyrus BROOM, 1914
G. capensis BROOM, 1914 (Type)

PLESION: YOUNGINIFORMES BENTON & NORMAN, in BENTON, 1985
= DIVISION: YOUNGINIFORMES ROMER, 1945

Superfamily: YOUNGINOIDEA Broom, 1914 (sensu Currie, 1981)

Family: YOUNGINIIDAE Broom, 1914
= Family: YOUNGINIIDAE Broom, 1914 (sensu Romer, 1956)

Genus: Acerosodontosaurus CURRIE, 1980
A. piveteaui CURRIE, 1980 (Type)

Genus: Youngina BROOM, 1914
= Youngoides OLSON & BROOM,1937
= Youngopsis BROOM, 1937
Y. capensis BROOM, 1914 (Type)
= Youngina gracilis BROOM
= Youngoides romeri OLSON & BROOM, 1937
= Youngopsis kitchingi BROOM, 1937
= Youngopsis rubidgei BROOM & ROBINSON, 1948
= Youngoides minor BROOM & ROBINSON, 1948
Y. sp

Family: TANGASAURIDAE Haughton, 1924

Gen. sp indet.

Subfamily: KENYASAURINAE Currie, 1982

Genus: Kenyasaurus HARRIS & CARROLL, 1977
K. mariakaniensis HARRIS & CARROLL, 1977 (Type)

Genus: Thadeosaurus CARROLL, 1981
T. colcanapi CARROLL, 1981 (Type)
= Broomia madagascariensis PIVETEAU, 1925
= Datheosaurus sp PIVETEAU, 1926
= Tangasaurus mennilli PIVETEAU, 1926 (partim)

Subfamily: TANGASAURINAE Haughton, 1924 (sensu Currie, 1982)

Genus: 'Datheosaurus'
= Tangasaurus mennelli PIVETEAU 1926 (partim)

Genus: Hovasaurus PIVETAEU, 1926
H. boulei PIVETAEU, 1926 (Type)
= Tangasaurus mennelli PIVETEAU 1926 (partim).
H. ranohirensis BALOGE & DUTUIT, 1982

Genus: Tangasaurus HAUGHTON, 1924
T. mennelli HAUGHTON, 1924 (Type)

Gen. sp indet.

SUBORDER: AVICEPHALA SENTER, 2004

Family: WEIGELTISAURIDAE Kuhn, 1939
= Family: COELUROSAURAVIDAE Currie, 1981
= Family: PALAEOCHAMAELEONTIDAE Romer, 1933?
= PLESION: WEIGELTISAURIDAE BENTON & NORMAN, in BENTON, 1985

Subfamily: WEIGELTISAURINAE Kuhn, 1939

Genus: Coelurosauravus PIVETEAU, 1926
= Daedalosaurus CARROLL, 1978
C. elivensis PIVETEAU, 1926 (Type)
= Daedalosaurus madagascariensis CARROLL, 1978

Genus: Rautiania BULANOV & SENNIKOV, 2006
R. alexandri BULANOV & SENNIKOV, 2006 (Type)
R. minchi BULANOV & SENNIKOV, 2006
R. sp

Genus: Weigeltisaurus KUHN, 1936
= Gracilisaurus WEIGELT, 1930
= Palaeochamaeleo WEIGELT, 1930 non  DE STEFANO, 1903 (Palaeochamaeleo europaeus Agamidae)
W.  jaekeli
(WEIGELT, 1930) KUHN, 1936 (Type)
= Palaeochamaeleo jaekeli WEIGELT, 1930
= Coelurosauravus jaekeli (WEIGELT, 1930) EVANS & HAUBOLD, 1987
= Gracilisaurus ottoi WEIGELT, 1930

Subfamily: GLAURUNGINAE Bulanov & Sennikov, 2015

Genus: Glaurung BULANOV & SENNIKOV, 2015
G. schneideri BULANOV & SENNIKOV, 2015  (Type)

Family: LONGISQUAMIDAE Sharov, 1970
= PARAORDER: BASITHEROPODA OLSHEVSKY, 1991 (partim)

Genus: Longisquama SHAROV, 1970
= Longisquamata McLOUGHLIN, 1979 (sic)
L. insignis SHAROV, 1970 (Type)

INFRAORDER: SIMIOSAURIA SENTER, 2004
= CLADE NAME: DREPANOSAUROMORPHA RENESTO, SPIELMANN, LUCAS & SPAGNOLI, 2010

Incertae sedis

Genus: Ancistronychus GONCALVES & SIDOR, 2019
A. paradoxus GONCALVES & SIDOR, 2019 (Type)

Genus: Hypuronector COLBERT & OLSEN, 2001
H. limnaios COLBERT & OLSEN, 2001 (Type)

Genus: Wachtlerosaurus PERNER, 2018
W. ladinicus PERNER, 2018 (Type)

Gen. sp indet.

CLADE NAME: ELYUROSAURIA RENESTO, SPIELMANN, LUCAS & SPAGNOLI, 2010

Incertae sedis

Genus: Vallesaurus WILD, 1991
V. cenensis WILD, 1991 (Type)
V. zorzinensis RENESTO, SPIELMANN, LUCAS & SPAGONLI, 2010

Family: DREPANOSAURIDAE Pinna, 1980

Genus: Avicranium PRITCHARD & NESBITT, 2017
A. cranium PRITCHARD & NESBITT, 2017 (Type)

Genus: Kyrgyzsaurus ALIFANOV & KUROCHKIN, 2011
K. bukhanchenkoi ALIFANOV & KUROCHKIN, 2011 (Type)

Genus: Skybalonyx JENKINS, PRITCHARD, MARSH, KLIGMAN, SIDOR & REED, 2020
S. skapter JENKINS, PRITCHARD, MARSH, KLIGMAN, SIDOR & REED, 2020 (Type)

Genus: Unguinychus PUGH, NESBITT, HECKERT, LAUER & LAUER, 2024
U. onyx PUGH, NESBITT, HECKERT, LAUER & LAUER, 2024 (Type)

Subfamily: DREPANOSAURINAE Pinna, 1980

Genus: Drepanosaurus PINNA, 1980
D. unguicaudatus PINNA, 1980 (Type)
D. sp

Gen. sp indet.

Subfamily: MEGALANCOSAURINAE Olshevsky, 1991
= Family: MEGALANCOSAURIDAE Olshevsky, 1991
= Family: MEGALONCOSAURIDAE Kalandadze & Rautian, 1991 (
sic)
= PARAORDER: BASITHEROPODA OLSHEVSKY, 1991 (
partim)

Genus: Dolabrosaurus BERMAN & REISZ, 1992
D. aquatilis BERMAN & REISZ, 1992 (Type)

Genus: Megalancosaurus CALZAVARA, MUSICO & WILD, 1980
M. preonensis CALZAVARA, MUSICO & WILD, 1980 (Type)
= Drepanosaurus unguicaudatus PINNA, 1980 partim)
M. endennae RENESTO, SPIELMANN, LUCAS & SPAGNOLI, 2010
= Drepanosaurus unguicaudatus PINNA, 1980 (partim)
= Megalancosaurus preonensis RENESTO, 1994

CLADE NAME: THALATTOSAURIFORMES NICHOLLS, 1999

Incertae sedis

Genus: Wapitisaurus BRINKMAN, 1988
W. problematicus BRINKMAN, 1988 (Type)
Note: This may be a fish (Evans pers. com..)

ORDER: THALATTOSAURIA MERRIAM, 1904

Family: PACHYSTROPHEIDAE Kuhn, 1961

Genus: Pachystropheus HUENE, 1935
= Pachastropheaus ORLOV, 1964 (sic)
= RysosteusOWEN, 1841
= Ryzosteus
HALSTEAD & NICOLL, 1971 (sic)
P. rhaeticus
HUENE, 1935 (Type)
= Rysosteus (no species given) OWEN, 1841
= Rysosteus oweni WOODWARD & SHERBORN, 1890
P. sp

Superfamily: THALATTOSAUROIDEA Merriam, 1904
= Superfamily: CLARAZISAUROIDEA Hoffstetter, 1955

Incertae sedis

Genus: Gunakadeit DRUCKENMILLER, KELLEY, METZ & BAICHTAL, 2020
G. joseeae DRUCKENMILLER, KELLEY, METZ & BAICHTAL, 2020 (Type)

Genus: Neosinasaurus YIN & ZHAO, 2000
= Sinasaurus ZHOU, in YIN, ZHAO, CAO, YU & LUO, 2000
N. hoangi (YIN, ZHAO, CAO, YU & LUO, 2000) YIN & ZHOU, 2000 (Type)
= Sinasaurus hoangi ZHOU, in YIN, ZHAO, CAO, YU & LUO, 2000

Genus: Wayaosaurus ZHOU, in YIN, ZHAO, CAO, YU & LUO, 2000
W. geei ZHOU, in YIN, ZHAO, CAO, YU & LUO, 2000 (Type)
W. bellus ZHOU, in YIN, ZHAO, CAO, YU & LUO, 2000

Family: CLARAZIIDAE Peyer, 1936

Genus: Clarazia PEYER, 1936
C. schinzi PEYER, 1936 (Type)

Genus: Hescheleria PEYER, 1936
H. ruebeli PEYER, 1936 (Type)

Genus: Nectosaurus MERRIAM, 1905
N. halius MERRIAM, 1905 (Type)
= Nectosaurus balius BENTON, 1986 (sic)
N. sp
= Thalattosaurus shastensisMERRIAM, 1904 (nomen nudum)

Genus: Paralonectes NICHOLLS & BRINKMAN, 1993
P. merriami NICHOLLS & BRINKMAN, 1993 (Type)

Genus: Nova SUES & CLARK, 2005

Family: THALATTOSAURIDAE Merriam, 1904

Genus: Agkistrognathus NICHOLLS & BRINKMAN, 1993
= Gyrognathus NICHOLLS & BRINKMAN, 1990 (nomen nudum)
A. campelli NICHOLLS & BRINKMAN, 1993 (Type)
= Gyrognathus campbelli NICHOLLS & BRINKMAN, 1990 (nomen nuda)

Genus: Blezingeria HUENE, 1951
B. ichthyospondylus (E. FRAAS, 1896) HUENE, 1951 (Type)
= Nothosaurus ichthyospondylus E. FRAAS, 1896
B. sp

Genus: Concavispina ZHAO, LIU, LI, & HE, 2013
C. biseridens ZHAO, LIU, LI, & HE, 2013 (Type)
C. xingyiensis (LI, JIANG, RIEPPEL, MOTANI & TINTORI, 2016) MAISCH, 2024
= Xinpusaurus xingyiensis LI, JIANG, RIEPPEL, MOTANI & TINTORI, 2016

Genus: Thalattosaurus MERRIAM, 1904
= Scenodon MERRIAM, 1905 (nomen nudum)
T. alexandrae MERRIAM, 1904 (Type)
T. perrini MERRIAM, 1905
= Scenodon perrini (MERRIAM, 1905) MERRIAM, 1905 (nomen nudum)
Note: In the same paper Thalattosaurus perrini is named; in a footnote Merriam wrote, “Should this type be found to be genetically distinct from Thalattosaurus, the generic name Scenodon will be used to distinguish it … thus Scenodon is a nomen nudum.”
T. borealis NICHOLLS & BRINKMAN, 1993
T. sp

Genus: Xinpusaurus YIN in YIN, ZHAO, CAO, YU & LUO, 2000
X. suni YIN in YIN, ZHAO, CAO, YU & LUO, 2000 (Type)
= Xinpusuaurs bamaolinensis CHENG, 2003
X. kohi JIANG, MAISCH, SUN, MATZKE & HAO,  2004
X. sp

Genus: Nova TINTORI, RENESTO, LOMBARDO, MANAROLLA, MANENTI & VENDICO, 1996

Genus: Nova? (HE, HU, ZHANG & SHEN [2021] 2023) MAISCH, 2024

Gen. sp indet.

Superfamily: ASKEPTOSAUROIDEA
Kuhn-Schnyder, 1971

Family: ENDENNASAURIDAE Renesto, 1984

Genus: Endennasaurus RENESTO, 1984
E. acutirostris RENESTO, 1984 (Type)

Family: ASKEPTOSAURIDAE Kuhn-Schnyder, 1952

Genus: Anshunsaurus LIU, 1999
A. huangguoshuensis LIU, 1999 (Type)
A. wushaensis RIEPPEL, LIU & LI, 2006
A. huangnihensis CHENG, CHEN & WANG, 2007

Genus: Askeptosaurus NOPCSA, 1925
A. italicus NOPCSA, 1925 (Type)
A. sp

Genus: Miodentosaurus CHENG, WU & SATO, 2007
M. brevis CHENG, WU & SATO, 2007 (Type)

CLADE NAME: SAURIA McCARTNEY, 1802 sensu GAUTHIER, KLUGE & ROWE, 1988

NOTE: SEE ICHTHYOSAUROPTERYGIA

NOTE: SEE SAUROPTERYGIA

ORDER: HELVETICOSAURIA PEYER, 1955

Family: HELVETICOSAURIDAE Peyer, 1955

Genus: Eusaurosphargis NOSOTTI & RIEPPEL, 2003
E. dalsassoi NOSOTTI & RIEPPEL, 2003 (Type)
E. sp

Genus: Helveticosaurus PEYER, 1955
H. zolligeri PEYER, 1955 (Type)
H. sp

LEGION: LEPIDOSAUROMORPHA BENTON, 1983 Note: At the same level as CLADE NAME: ARCHELOSAURIA CRAWFORD, PARHAM, SELLAS, FAIRCOLOTH, GLENN, PAPENFUSS, HENDERSON, HANSEN & SIMISON 2015
= DIVISION: LEPIDOSAURIA DUMERIL & BIBRON, 1839
= SUBDIVISION: LEPIDOSAURIA BENTON & NORMAN, in BENTON, 1985
= SUBDIVISION: LEPIDOSAURIA GARDNER, 1982

Incertae sedis

Genus: Cargninia BONAPARTE, SCHULTZ, SOARES & MARTINELLI, 2010
C. enigmatica BONAPARTE, SCHULTZ, SOARES & MARTINELLI, 2010 (Type)

Genus: Coartaredens SPENCER & STORRS, 2002
C. isaacii SPENCER & STORRS, 2002 (Type)

Genus: Feralisaurus CAVICCHINI, ZAHER & BENTON, 2020
F. corami CAVICCHINI, ZAHER & BENTON, 2020 (Type)

Genus: Fraxinisauria SCHOCH & SUES, 2018
F. rozyneake SCHOCH & SUES, 2018 (Type)

Genus: Langobardisaurus non RENESTO, 1994
L. ?rossii BIZZARINI & MUSCIO, 1995

Genus: Marmoretta EVANS, 1991
M. oxoniensis EVANS, 1991 (Type)
M. sp

Genus: Patricosaurus SEELEY, 1887 (nomen dubium)
P. merocratus SEELEY, 1887 (Type)

Genus: Sophineta EVANS & BORSUK-BIALYNICKA, 2009
S. cracoviensis EVANS & BORSUK-BIALYNICKA, 2009 (Type)

Genus: Taytalura MARTINEZ, SIMOES, SOBRAL & APESTEGUIA, 2021
T. alcoberi MARTINEZ, SIMOES, SOBRAL & APESTEGUIA, 2021 (Type)

Genus: Vellbergia SOBRAL, SIMOES & SCHOCH, 2020
V. bartholomaei SOBRAL, SIMOES & SCHOCH, 2020 (Type)

Genus: Vinitasaura SUES & KLIGMAN, 2021
V. lizae SUES & KLIGMAN, 2021 (Type)

Genus: Nova 1 SCHOCH, 2015

Genus: Nova 3 SCHOCH, 2015

Gen. sp indet.

Family: PALIGUANIDAE Broom, 1926

Genus: Blomosaurus TATARINOV, 1978 (nomen dubium)
B. ivachnenkoi TATARINOV, 1978 (Type)

Genus: Heleosuchus BROOM, 1913
H. griesbachii (OWEN, 1876) (Type)
= Saurosternon greisbachi OWEN, 1876
Note: Carroll (1981) suggested Heleosuchus may a younginiid; Carroll (1987) then suggested it may be a member of the Eosuchia or an otherwise unrecognized lineage of primitive lepidosauromorphs (Carroll, 1987).

Genus: Kudnu BARTHOLOMAI, 1979
K. mackinlayi BARTHOLOMAI, 1979 (Type)

Genus: Paliguana BROOM, 1903
P. whitei BROOM, 1903 (Type)

Family: SAUROSTERNIDAE Haughton, 1924
= Subfamily: SAUROSTERNIAE Haughton, 1924
= PLESION: SAUROSTERNIDAE BENTON & NORMAN, in BENTON, 1985

Genus: Saurosternon HUXLEY, 1868
= Batrachosaurus OWEN, 1872
= Niphosaurus EVANS, 1985
= Saurosternum LYDEKKER, 1888 (sic)
S. baini HUXLEY, 1868 (Type)
= Niphosaurus kermacki EVANS, 1985

Gen. sp indet.

Bibliography

Bibliography for taxa list

_____________________________________________________________________________________

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H

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O

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P

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