ENGLAND

SOMERSET COUNTY

BLUE ANCHOR

WESTBURY MUDSTONE FORMATION

RHAETIAN STAGE

LATEST LATE TRIASSIC EPOCH

LATEST LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1903

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: SHASTASAURIA MONTANI, 1999

Family: SHASTASAURIDAE Merriam, 1895

*Ichthyotitan severnensis

SOMERSET COUNTY

NEAR LILSTOCK

UPPER WESTBURY MUDSTONE FORMATION

RHAETIAN STAGE

LATEST LATE TRIASSIC EPOCH

LATEST LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

Gen. sp indet.

SOUTHERN UNITED KINGDOM

ENGLAND

SOMERSET COUNTY

DONIFORD BAY

BLUE LIAS FORMATION

CALOCERAS JOHNSTONI AMMONITE SUBZONE

PSILOCERASPLANORBIS AMMONITE ZONE

HETTANGIAN STAGE

LOWER LIAS EPOCH

EARLY JURASSIC

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: ICHTHYOSAUROIDEA Bonaparte, 1841 (Emend McGowan & Montani, 2003)

Family: ICHTHYOSAURIDAE Bonaparte, 1841

Ichthyosaurus somersetensis

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

BEACH AT DONIFORD BAY

BLUE LIAS FORMATION

BUCKLANDI AMMONITE SUBZONE

LOWER SINEMURIAN STAGE

LOWER LIAS EPOCH

EARLY JURASSIC

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: ICHTHYOSAUROIDEA Bonaparte, 1841 (Emend McGowan & Montani, 2003)

Family: ICHTHYOSAURIDAE Bonaparte, 1841

Ichthyosaurus conybeari

_____________________________________________________________________________________

SOMERSET COUNTY

NORTH ILMINSTER

STRAWBERRY BANK

FALCIFERUM AMMONITE ZONE

TOARCIAN STAGE

UPPER LIAS EPOCH

LOWER JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990

COHORT: CROCODYLOTARSI BENTON & CLARK, 1988

MAGNORDER: SUCHIA KREBS, 1974

SUPERORDER: CROCODYLOMORPHA WALKER, 1968

GRANDORDER: CROCODILIFORMES HAY, 1930

MICRORDER: MESOEUROCROCODYLIA WHETSTONE & WHYBROW, 1983

ORDER: MESOSUCHIA EMEND HUXLEY, 1875

SUBORDER: THALATTOSUCHIA EMEND FRAAS, 1901

Incertae sedis

Pelagosaurus typus

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

ILMINSTER

IN AN AREA CALLED THE TRIANGLE

NORTH OF THE HIGH STREET

STRAWBERRY BANK QUARRY (NOW BUILT OVER)

HARPOCERAS FALICIFERUM ZONE

LOWER TOARCIAN STAGE

UPPER LIAS EPOCH

LATE EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1903

INFRACLASS: NEODIAPSIDA BENTON, 1985

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: ICHTHYOSAUROIDEA Bonaparte, 1841 (Emend McGowan & Montani, 2003)

Family: STENOPTERYGIIDAE Jaekel, 1904

Hauffiopteryx typicus

Stenopterygius triscissus

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

WATCHET

PRE-PLANORBIS BEDS

HETTANGIAN STAGE

LOWER LIAS EPOCH

EARLY JURASSIC

Note: Marine deposit.

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990

COHORT: CROCODYLOTARSI BENTON & CLARK, 1988

SUPERORDER: PARASUCHIMORPHA NOVA

ORDER: PARASUCHIA HUXLEY, 1875

Family: MYSTRIOSUCHIDAE Huene, 1915

Subfamily: MYSTRIOSUCHINAE Huene, 1915 (sensu Chatterjee, 1978)

aff. Mystriosuchus sp

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

STREET

LOWERMOST HETTANGIAN STAGE

LOWER LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLIOSAUROMORPHA NOVA

Superfamily: PLIOSAUROIDEA Seeley, 1874

Family: RHOMALEOSAURIDAE Nopsca, 1928

*Avalonnectes arturi

*Stratesaurus taylori

_____________________________________________________________________________________

SOUTHERN UNITED KINGDOM

ENGLAND

SOMERSET COUNTY

WATCHET

LOWERMOST HETTANGIAN STAGE

LOWER LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLIOSAUROMORPHA NOVA

Superfamily: PLIOSAUROIDEA Seeley, 1874

Incertae sedis

*Eoplesiosaurus antiquior

_____________________________________________________________________________________

ENGLAND

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

Incertae sedis

Gen. sp. indet.

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

Incertae sedis

Gen. sp indet.

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT: AVEMETATARSALIA BENTON, 1999

COHORT: PROLACERTIFORMES CAMP, 1945 NOVA

SUPERORDER: TAPINOPLATIA PETERS, 2000

GRANDORDER: CHARACIOPODA PETERS, 2000

MICRORDER: FENESTRASAURIA PETERS, 2000

ORDER: PTEROSAURIA KAUP, 1834

Incertae sedis

Gen. sp indet.

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990

COHORT: CROCODYLOTARSI BENTON & CLARK, 1988

MAGNORDER: SUCHIA KREBS, 1974

SUPERORDER: CROCODYLOMORPHA WALKER, 1968

GRANDORDER: CROCODILIFORMES HAY, 1930

MICRORDER: MESOEUROCROCODYLIA WHETSTONE & WHYBROW, 1983

ORDER: MESOSUCHIA EMEND HUXLEY, 1875

SUBORDER: THALATTOSUCHIA EMEND FRAAS, 1901

Family: TELEOSAURIDAE Geoffroy, 1831

Clovesuurdameredeorstepheni
= *Steneosaurus stephani

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

NEAR FROME (NOT AUST CLIFF)

HOLWELL

HOLWELL FISSURE FILL

RHAETIAN STAGE

UPPERMOST LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

OR NEODIAPSIDA: INCERTAE SEDIS

ORDER: PLACODONTIA MEYER, 1863

SUBORDER: CYMODONTOIDEA NOPCSA, 1923

Superfamily: PLACOCHELYIDA Jaekel, 1907 (sensu Romer, 1956)

Family: PLACOCHELYIDAE Jaekel, 1907

*Psephoderma anglicum

INFRACLASS: NEODIAPSIDA BENTON, 1985

LEGION: LEPIDOSAUROMORPHA DUMERIL & BIBRON, 1839

SUBLEGION: LEPIDOSAURIA HAECKEL, 1866 (DUMERIL & BIBRON, 1839)

MAGNORDER: SPHENODONTIFORMES Hay, 1930

ORDER: SPHENODONTIA WILLISTON, 1925

Family: BRACHYRHINODONTIDAE Huene, 1948

Clevosaurus aff hudsoni

Family: SPHENODONTIDAE Cope, 1869

Diphydontosaurus avonis

SUBCLASS: SYNAPSIDA OSBORN, 1903

SUPERORDER: THERASPIDA BROOM, 1905

GRANDORDER: EUTHERAPSIDA

MICRORDER: NEOTHERAPSIDA

ORDER: THERIODONTIA OWEN, 1881

EUTHERIODONTIA

SUBORDER: CYNODONTIA OWEN, 1860

EPICYNODONTIA HOPSON & KITCHING, 2001

INFRAORDER: EUCYNODONTIA

MAMMALIAMORPHA ROWE, 1988

Superfamily: CHINQUODONTOIDEA Huene, 1936

Family: DROMATHERIIDAE Gill, 1872

Pseudotriconodon wildi

UNNAMED RANK: MAMMALIFORMES ROWE, 1988

ORDER: MORGANUCODONTA KERMACK, MUSSETT & RIGNEY, 1973

Family: MORGANUCODONTIDAE Kuhne, 1958

*Eozostrodon parvus
= *Eozostrodon problematicus

CLASS: MAMMALIA LINNAEUS, 1758

SUBCLASS: PROTOTHERIA GILL, 1872

INFRACLASS: HOLOTHERIA (WIBEL, ROUGIER, NOVACEK, MCKENNA & DASHZEVEG, 1995) MCKENNA & BELL, 1997

SUPERLEGION: KUENHNEOTHERIA In McKENNA & BELL, 1997

Family: KUEHNEOTHERIIDAE Kermack, Kermack & Mussett, 1968

Kuehneotherium sp

SUBCLASS: THERIIFORMES (ROWE, 1988) McKENNA & BELL, 1997

INFRACLASS: ALLOTHERIA (MARSH, 1880) McKENNA & BELL, 1997

ORDER: HARAMIYOIDEA (HAHN, 1973) McKENNA & BELL, 1997

SUBORDER: HARAMIYOIDEA HAHN, 1973

Family: THOMASIIDAE Poche, 1908

Thomasia antiqua
= Microlestes antiquus
= Haramiya antiqua
= *Haramiya fissurae
= Microleptes fissurae Thomasia moorei
= *Haramiya moorei
= Microcleptes moorei
= Microlestes (Plagiaulax) moorei
Thomasia anglica
Thomasia sp
= Haramiya sp

Gen. sp indet.

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

MOUNTAIN-LIMESTONE NEAR FROME

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990

COHORT: CROCODYLOTARSI BENTON & CLARK, 1988

MAGNORDER: SUCHIA KREBS, 1974

SUPERORDER: PSEUDOSUCHIA ZITTEL 1887-1890

Gen. sp indet.

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

FROME

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990

COHORT: CROCODYLOTARSI BENTON & CLARK, 1988

SUPERORDER: PARASUCHIMORPHA NOVA

ORDER: PARASUCHIA HUXLEY, 1875

Incertae sedis

Genus et sp indet.

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

FROME

KEUPER

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

UNNAMED RANK: MAMMALIFORMES ROWE, 1988

ORDER: HARAMIYOIDEA (HAHN, 1973) McKENNA & BELL, 1997

SUBORDER: HARAMIYOIDEA HAHN, 1973

Family: HARAMIYIDAE Simpson, 1947

Haramiya moorei
= Microcleptes moorei
= Microlestes (Plagiaulax) moorei

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

KEUPER FORMATION

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

DIVISION: LEPIDOSAUROMORPHA BENTON, 1983

Incertae sedis

Family: KUEHNEOSAURIDAE Robinson, 1962

Kuehneosaurus sp

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

BATSCOMBE QUARRY NEAR CHEDDAR

KEUPER FORMATION

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

DIVISION: LEPIDOSAUROMORPHA BENTON, 1983

Incertae sedis

Family: KUEHNEOSAURIDAE Robinson, 1962

*Kuehneosuchus latissimus
= Kuehneosaurus latissimus

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

UNKNOWN

UNKNOWN

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

Incertae sedis

Gen. sp indet.

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

PRE PSILOCEAS AGE

LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

Incertae sedis

Gen. sp. indet.

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

FROM THE TUNNEL OF THE RAILWAY NEAR FROME

LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN, 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLIOSAUROMORPHA NOVA

Superfamily: PLIOSAUROIDEA Seeley, 1874

Family: PLIOSAURIDAE Seeley, 1874

Incertae sedis

Polyptychodon sp

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLESIOSAUROMORPHA NOVA

EUPLESIOSAURIA O’KEEFE, 2001

Family: PLESIOSAURIDAE Gray, 1825

Incertae sedis

non Plesiosaurus, *P. subconcavus
non Plesiosaurus, *P. compressus

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

DEVIZES

PURBECK

UPPERMOST TITHONIAN

UPPERMOST MALM EPOCH

LATE JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: CHELONOMORPHA KUHN, 1960

SUPERCOHORT: TESTUDINES LINNAEUS, 1758

COHORT: CASICHELYDIA emend GAFFNEY & MEYLAN, 1988

MAGANORDER: CRYPTODIRA GAFFNEY & MEYLAN, 1988

SUPERORDER: SELMACRYPTODIRA GAFFNEY, HUTCHISON, JENKINS & MEEKR, 1987

GRANDORDER: PLEUROSTERNOIDEA GAFFNEY & MEYLAN, 1988

Superfamily: PLEUROSTERNIDEA Cope, 1868 (sensu Hay, 1893)

Family: PLEUROSTERNIDAE Cope, 1868

*Pleurosternon concinnum

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

EMBOROUGH QUARRY

FISSURE FILL

KEUPER FORMATION?

CARNIAN/NORIAN

LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: PARAREPTILIA OLSON 1947

INFRACLASS: SAUROPSIDA HUXLEY, 1864

ORDER: PROCOLOPHONOMORPHA ROMER, 1964

SUBORDER: PROCOLPHOMORPHA SEELEY, 1888

Family: PROCOLOPHONIDAE, Seeley, 1888

Incertae sedis

*Tricispisaurus thomasi

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

DIVISION: LEPIDOSAUROMORPHA BENTON, 1983

Incertae sedis

Family: KUEHNEOSAURIDAE Robinson, 1962

*Kuehneosaurus latus

SUBLEGION: LEPIDOSAURIA HAECKEL, 1866 (DUMERIL & BIBRON, 1839)

MAGNORDER: SPHENODONTIFORMES Hay, 1930

ORDER: SPHENODONTIA WILLISTON, 1925

Family: SPHENODONTIDAE Cope, 1869

Planocephalosaurus sp

LEGION: ARCHOSAUROMORPHA HUENE, 1946

ORDER: TRILOPHOSAURIA ROMER, 1956

Family: VARIODENTIDAE Tatarinov, 1964

*Variodens inopinatus

Family: TRILOPHOSAURIDAE Gregory, 1945

*Tricuspisaurus thomasi

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

CHILCOLMPTON

WB 1

BASAL BONE-BED

RHAETIAN STAGE

LATEST LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT CHORISTODERA NOVA

ORDER: CHORISTODERA COPE, 1876

Family: PACHYSTROPHEIDAE Kuhn, 1961

Pachystropheus rhaeticus
= Rysosteus oweni

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

STRAWBERRY BANK

“FISH AND SAURIAN BED”

WHITBIAN SUBSTAGE

LOWER TOARCIAN STAGE

UPPER LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990

COHORT: CROCODYLOTARSI BENTON & CLARK, 1988

MAGNORDER: SUCHIA KREBS, 1974

SUPERORDER: CROCODYLOMORPHA WALKER, 1968

GRANDORDER: CROCODILIFORMES HAY, 1930

MICRORDER: MESOEUROCROCODYLIA WHETSTONE & WHYBROW, 1983

ORDER: MESOSUCHIA EMEND HUXLEY, 1875

SUBORDER: THALATTOSUCHIA EMEND FRAAS, 1901

Incertae sedis

Pelagosaurus typus
= Crocodilus temporalis
= Teleosaurus temporalis

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

BLUE ANCHOR POINT

WESTBURY FORMATION

PENARTH GROUP

RHAETIAN STAGE

LATEST LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUPERCOHORT CHORISTODERA NOVA

ORDER: CHORISTODERA COPE, 1876

Family: PACHYSTROPHEIDAE Kuhn, 1961

*Pachystropheus rhaeticus
= Rysosteus oweni

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

WATCHET

KEUPER

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

UNNAMED RANK: MAMMALIFORMES ROWE, 1988

ORDER: HARAMIYOIDEA (HAHN, 1973) McKENNA & BELL, 1997

SUBORDER: HARAMIYOIDEA HAHN, 1973

Family: HARAMIYIDAE Simpson, 1947

Haramiya rhaeticus
= Hypsiprymnopsis rhaetica

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

NEAR WATCHET

BLUE ANCHOR POINT

BLUE ANCHOR FORMATION

LOWER PART OF THE EARLY RHAETIAN STAGE

UPPERMOST LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

UNNAMED RANK: MAMMALIFORMES ROWE, 1988

ORDER: HARAMIYOIDEA (HAHN, 1973) McKENNA & BELL, 1997

SUBORDER: HARAMIYOIDEA HAHN, 1973

Family: HARAMIYIDAE Simpson, 1947

*Haramiya rhaeticus
= Hypsiprymnopsis rhaetica

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

NEAR FROME

GREENSAND

SENONIAN SUBEPOCH

GULF EPOCH

LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN, 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLIOSAUROMORPHA NOVA

Superfamily: PLIOSAUROIDEA Seeley, 1874

Family: PLIOSAURIDAE Seeley, 1874

*Polyptychodon interruptus

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

LOWER LIASSIC

LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: TEMNODONTOSAUROIDEA McGowan, 1974 (sensu McGowan & Montani, 2003)

Family: TEMNODONTOSAURIDAE McGowan, 1974

Temnodontosaurus platyodon

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

OOLITE

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: ICHTHYOSAUROIDEA Bonaparte, 1841 (Emend McGowan & Montani, 2003)

Family: ICHTHYOSAURIDAE Bonaparte, 1841

Ichthyosaurus communis

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

THE FORESHORE NEAR LISTOCK

LOWER LIASSIC

SINEMURIAN STAGE

LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

SUPERFAMILY: EURHINOSAUROIDEA EMEND MONTANI, 1999

Family: LEPTONECTIDAE Maisch, 1998

*Excalibosaurus costini

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

THE FORESHORE NEAR WATCHET

6 MILES WEST FROM THE TYPE

LOWER LIASSIC

SINEMURIAN STAGE

LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

SUPERFAMILY: EURHINOSAUROIDEA EMEND MONTANI, 1999

Family: LEPTONECTIDAE Maisch, 1998

Excalibosaurus costini

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

ILMINSTER

KIMMERIDGE CLAY

KIMMERIDGIAN STAGE

MIDDLE MALM EPOCH

LATE JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

SUPERFAMILY: OPHTHALMOSAURIDEA SEELEY, 1874

Family: OPTHALMOSAURIDAE Seeley, 1874

Ophthalmosaurus icenicus

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

ILMINSTER

TORACIAN STAGE

UPPER LIAS EPOCH

LATE EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

Incertae sedis

Gen. sp indet.

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: ICHTHYOSAUROIDEA Bonaparte, 1841 (Emend McGowan & Montani, 2003)

Family: STENOPTERYGIIDAE Jaekel, 1904

Hauffiopteryx typicus
= Stenopterygius hauffianus

Stenopterygius sp

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

AT LOW WATER MARK NEAR KELIVE

LOWER LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: ICHTHYOSAUROIDEA Bonaparte, 1841 (Emend McGowan & Montani, 2003)

Family: ICHTHYOSAURIDAE Bonaparte, 1841

Ichthyosaurus communis

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

MENDIP

RHAETIAN STAGE

UPPERMOST LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985

INFRALEGION: DINOSAURIFORMES NOVAS, 1992

SUPERCOHORT: DINOSAURIA OWEN, 1842

COHORT: ORNITHISCHIFORMES COOPER, 1985

SUPERORDER: SAUROPODOMORPHA HUENE, 1932

ORDER: PROSAUROPODA HUENE, 1920 (emend)

Family: THECODONTOSAURIDAE Lydekker, 1890

Thecodontosaurus sp

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

STREET ON FOSSE

LOWER LIAS EPOCH

EARLY EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLIOSAUROMORPHA NOVA

Superfamily: PLIOSAUROIDEA Seeley, 1874

Family: THAUMATOSAURIDAE Romer, 1956

*Atychodracon megacephalus = Rhomaleosaurus megacephalus
= Plesiosaurus megacephalus
= Plesiosaurus megacephalus
= Eurycleidus megacephalus

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

STREET

LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLESIOSAUROMORPHA NOVA

EUPLESIOSAURIA O’KEEFE, 2001

Family: PLESIOSAURIDAE Gray, 1825

Thalassiodracon hawkinsii
= Plesiosaurus cliduchus

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

STREET

PSILOCERAS PLANORBIS ZONE

HETTANGIAN-PLIENSBACHIAN STAGE

LOWER LIAS EPOCH

EARLY EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLESIOSAUROMORPHA NOVA

EUPLESIOSAURIA O’KEEFE, 2001

Family: PLESIOSAURIDAE Gray, 1825

Thalassiodracon hawkinsii
= Plesiosaurus hawkinsii

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

STREET

LOWER LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: TEMNODONTOSAUROIDEA McGowan, 1974 (sensu McGowan & Montani, 2003)

Family: TEMNODONTOSAURIDAE McGowan, 1974

Temnodontosaurus platyodon
Temnodontosaurus longirostris

Superfamily: EURHINOSAUROIDEA EMEND Montani, 1999

Family: LEPTONECTIDAE Maisch, 1998

*Leptonectes tenuirostris
= Ichthyosaurus tenuirostris
= Leptopterygius tenuirostris
= Ichthyosaurus chirostrongulostinus

Superfamily: ICHTHYOSAUROIDEA Bonaparte, 1841 (Emend McGowan & Montani, 2003)

Family: ICHTHYOSAURIDAE Bonaparte, 1841

Ichthyosaurus communis
= *Protoichthyosaurus prostaxalis
= Ichthyosaurus prostaxalis
= *Protoichthyosaurus prosostealis
= Ichthyosaurus prosostealis

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835

INFRAORDER: PLESIOSAUROMORPHA NOVA

EUPLESIOSAURIA O’KEEFE, 2001

Family: PLESIOSAURIDAE Gray, 1825

Plesiosaurus dolichodeirus

Thalassiodracon hawkinsii
= Plesiosaurus eleutheraxon

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

STREET

A QUARRY NEAR OVERLEIGH

LOWER LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

SUPERFAMILY: EURHINOSAUROIDEA EMEND MONTANI, 1999

Family: LEPTONECTIDAE Maisch, 1998

Leptonectes tenuirostris
= Ichthyosaurus tenuirostris
= Leptopterygius tenuirostris

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

STOGURSEY

LOWER LIAS EPOCH

EARLY EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

SUPERFAMILY: EURHINOSAUROIDEA EMEND MONTANI, 1999

Family: LEPTONECTIDAE Maisch, 1998

Leptonectes tenuirostris
= Ichthyosaurus tenuirostris
= Leptopterygius tenuirostris

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

NEAR STREET

MANDEVILLE

LOWER LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

SUPERFAMILY: EURHINOSAUROIDEA EMEND MONTANI, 1999

Family: LEPTONECTIDAE Maisch, 1998

Leptonectes tenuirostris
= Ichthyosaurus tenuirostris
= Leptopterygius tenuirostris
*Leptonectes moorei

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

“MENDIP 14”

LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

SUPERORDER: THERASPIDA BROOM, 1905

GRANDORDER: EUTHERAPSIDA

MICRORDER: NEOTHERAPSIDA

ORDER: THERIODONTIA OWEN, 1881

EUTHERIODONTIA

SUBORDER: CYNODONTIA OWEN, 1860

EPICYNODONTIA HOPSON & KITCHING, 2001

INFRAORDER: EUCYNODONTIA

MAMMALIAMORPHA ROWE, 1988

Superfamily: TRITYLODONTIA Cope, 1884 (sensu Kuhne, 1943)

Family: TRITYLODONTIDAE Cope, 1884

Oligokyphus triserialis
= Oligokyphus biserialis
*Oligokyphus major
= Oligokyphus minor

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

OLD QUARRY ADJACENT TO TENGROVE LANE

LOWER LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

SUPERFAMILY: EURHINOSAUROIDEA EMEND MONTANI, 1999

Family: LEPTONECTIDAE Maisch, 1998

Leptonectes tenuirostris
= Ichthyosaurus tenuirostris
= Leptopterygius tenuirostris

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

QUARRY AT NIGHTCOUTT?

LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: ICHTHYOSAUROIDEA Bonaparte, 1841 (Emend McGowan & Montani, 2003)

Family: ICHTHYOSAURIDAE Bonaparte, 1841

Ichthyosaurus conybeari
= Ichthyosaurus latimanus

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

BATH

OOLITE FORMATION

MIDDLE JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: ICHTHYOSAUROIDEA Bonaparte, 1841 (Emend McGowan & Montani, 2003)

Family: ICHTHYOSAURIDAE Bonaparte, 1841

Ichthyosaurus communis
Ichthyosaurus sp

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

BRISTOL

LIAS EPOCH

EARLY JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: LONGIPINNATI HUENE, 1948

ORDER: MERRIAMOSAURIA MONTANI, 1999

SUBORDER: EUICHTHYOSAURIA MONTANI, 1999

INFRAORDER: PARVIPELVIA MONTANI, 1999

PARVORDER: NEOICHTHYOSAURIA SANDER, 2000

Superfamily: ICHTHYOSAUROIDEA Bonaparte, 1841 (Emend McGowan & Montani, 2003)

Family: ICHTHYOSAURIDAE Bonaparte, 1841

Macropterygius thyreospondylus
= Opthaolmosaurus? thyreospondylus
= Ichthyosaurus thyreospondylus

_____________________________________________________________________________________

ENGLAND

SOMERSET COUNTY

WEDMORE HILL

WEDMORE STONE MEMBER

WESTBURY FORMATION

PENARTH GROUP

RHAETIAN STAGE

UPPERMOST LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985

INFRALEGION: DINOSAURIFORMES NOVAS, 1992

SUPERCOHORT: DINOSAURIA OWEN, 1842

COHORT: THEROPODA EMEND MARSH, 1881

AVEPODA PAUL, 2002

SUPERORDER: NEOTHEROPODA BAKKER, 1986

GRANDORDER: TETANURAE GAUTHIER, 1986

ORDER: NEOTETANURAE SERENO, WILSON, LARSSON, DUTHEIL & SUES, 1994

SUBORDER: CARNOSAURIA HUENE, 1920

Superfamily: Incertae sedis

Family: MEGALOSAURIDAE Huxley, 1889

Incertae sedis

Newtonsaurus cambrensis
= Avalonia sanfordi (teeth)
= Avalonianus sanfordi (teeth)
= Picrodon herveyi (teeth)
= Megalosaurus? cambrensis

COHORT: ORNITHISCHIFORMES COOPER, 1985

SUPERORDER: SAUROPODOMORPHA HUENE, 1932

GRANDORDER: BRONTOSAURIA OLSHEVSKY, 1991 (emend)

MICRORDER: SAUROPODA MARSH, 1878

Family: MELANOROSAURIDAE Huene, 1929

*Camelotia borealis
= Avalonia sanfordi (postcranial material)
= Avalonianus sanfordi (postcranial material)
= Picrodon herveyi (postcranial material)

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ENGLAND

SOMERSET COUNTY

WEDMORE BEDS

RHAETIAN STAGE

UPPERMOST LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985

INFRALEGION: DINOSAURIFORMES NOVAS, 1992

SUPERCOHORT: DINOSAURIA OWEN, 1842

COHORT: THEROPODA EMEND MARSH, 1881

Incertae sedis

Gen sp indet.

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ENGLAND

SOMERSET COUNTY

SHEPTON MALLET

WESTBURY FORMATION

RHAETIAN STAGE

UPPERMOST LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985

INFRALEGION: DINOSAURIFORMES NOVAS, 1992

SUPERCOHORT: DINOSAURIA OWEN, 1842

COHORT: ORNITHISCHIFORMES COOPER, 1985

MAGNORDER: ORNITHISCHIA SEELEY, 1888

SUPERORDER: NEORNITHISCHIA COOPER, 1985

GRANDORDER: ORNITHOPODA MARSH, 1871

SUPERORDER: EURYOPDA SERENO, 1986

GRANDORDER: ARMATOSAURIA ZHAO, 1983 (emend)

ORDER: ANKYLOSAURIA OSBORN, 1923

SUBORDER: SCELIDOSAURIA COOPER, 1985

Family: SCELIDOSAURIDAE Cope, 1869

Scelidosaurus sp

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ENGLAND

SOMERSET COUNTY

WESTBURY FORMATION

RHAETIAN STAGE

UPPERMOST LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985

INFRALEGION: DINOSAURIFORMES NOVAS, 1992

SUPERCOHORT: DINOSAURIA OWEN, 1842

COHORT: ORNITHISCHIFORMES COOPER, 1985

SUPERORDER: SAUROPODOMORPHA HUENE, 1932

ORDER: PROSAUROPODA HUENE, 1920 (emend)

Family: THECODONTOSAURIDAE Lydekker, 1890

Thecodontosaurus sp

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ENGLAND

SOMERSET COUNTY

LOWER? KEUPER

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985

INFRALEGION: DINOSAURIFORMES NOVAS, 1992

SUPERCOHORT: DINOSAURIA OWEN, 1842

COHORT: ORNITHISCHIFORMES COOPER, 1985

SUPERORDER: SAUROPODOMORPHA HUENE, 1932

ORDER: PROSAUROPODA HUENE, 1920 (emend)

Family: THECODONTOSAURIDAE Lydekker, 1890

Thecodontosaurus antiquus
= *Thecodontosaurus playtodon

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ENGLAND

SOMERSET COUNTY

BATH OOLITE

OOLITE

MIDDLE JURASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

SUPERLEGION: NEODIAPSIDA BENTON, 1985

LEGION: ARCHOSAUROMORPHA HUENE, 1946

SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985

INFRALEGION: DINOSAURIFORMES NOVAS, 1992

SUPERCOHORT: DINOSAURIA OWEN, 1842

COHORT: THEROPODA EMEND MARSH, 1881

AVEPODA PAUL, 2002

SUPERORDER: NEOTHEROPODA BAKKER, 1986

GRANDORDER: TETANURAE GAUTHIER, 1986

ORDER: NEOTETANURAE SERENO, WILSON, LARSSON, DUTHEIL & SUES, 1994

SUBORDER: CARNOSAURIA HUENE, 1920

Superfamily: Incertae sedis

Family: MEGALOSAURIDAE Huxley, 1889

Incertae sedis

Gen. sp indet.

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ENGLAND

SOMERSET COUNTY

VALLIS VALE

WESTBURY FORMATION

RHAETIAN STAGE

UPPERMOST LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: SYNAPSIDA OSBORN, 1903

SUPERORDER: THERASPIDA BROOM, 1905

GRANDORDER: EUTHERAPSIDA

MICRORDER: NEOTHERAPSIDA

ORDER: THERIODONTIA OWEN, 1881

EUTHERIODONTIA

SUBORDER: CYNODONTIA OWEN, 1860

EPICYNODONTIA HOPSON & KITCHING, 2001

INFRAORDER: EUCYNODONTIA

MAMMALIAMORPHA ROWE, 1988

Superfamily: CHINQUODONTOIDEA Huene, 1936

Family: DROMATHERIIDAE Gill, 1872

Tricuspes tuebingensis

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