TEXAS
TAYLOR COUNTY
VALE FORMATION
MIDDLE CLEAR FORK GROUP
LAND-VERTEBRATE FAUNACHRON LOWER TO MIDDLE D
UPPER LEONARDIAN STAGE
UPPER ROTLIEGENDES EPOCH
EARLY PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: SYNAPSIDA OSBORN, 1903
ORDER: PELYCOSAURIA COPE, 1878
SUBORDER: EUPELYCOSAURIA KEMP, 1982
INFRAORDER: DIMETRODONTOMORPHA emend NOPCSA, 1925
Family: SPHENACODONTIDAE Marsh, 1878
Subfamily: SPHENACODONTINAE Marsh, 1878 (sensu Nopcsa, 1925)
Tribe: DIMETERODONTINI Nopcsa, 1925
Dimetrodon gigashomogenes
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TEXAS
TAYLOR COUNTY
APPROXIMATELY 16 KM SOUTH OF MERKEL
CASTLE PEAK LOCALITY
LOWER CHOZA FORMATION
UPPER CLEAR FORK GROUP
LAND-VERTEBRATE FAUNACHRON MIDDLE D
UPPER LEONARDIAN STAGE
UPPER ROTLIEGENDES EPOCH
EARLY PERMIAN
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: AMPHIBIPIDIDA NOVA
ICHNOSUBCLASS: REPTILIOMORPHIPEDIDII NOVA
ICHNOORDER: SEYMOURIAMORPHIPEDIDII NOVA
ICHNOSUBORDER: SEYMOURIDIPEDIDANOVA
Ichnosuperfamily: KOTLASSOIDIPEDIDAE Nova
Ichnofamily: DISCOSAURISCIDAE emend HAUBOLD, 1971
Aff Amphisauropus isp
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOORDER: ARAEOSCELIDIPEDIDA EMEND HAUBOLD, 1971
Family: Incerate sedis
Dromopus palmatus
ICHNOSUBCLASS: PARAREPTILIPEDIA NOVA
ICHNOINFRACLASS: SAUROPSIDIPEDIDI NOVA
ICHNOORDER: COTYLOSAURIPEDII EMEND VIALOV, 1966
Incertae sedis
Erpetopus willistoni
Varanopus curvidactylus
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TEXAS
TAYLOR COUNTY
SOUTH OF ABILENE
ARROYO FORMATION
LOWER CLEAR FORK GROUP
LAND-VERTEBRATE FAUNACHRON LOWER D
MIDDLE LEONARDIAN STAGE
UPPER ROTLIEGENDES
EARLY PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
SUBCLASS: LABYRINTHODONTIA OWEN, 1860
SUPERORDER: TEMNOSPONDYLIA ZITTEL, 1887
MICROORDER: LIMNARCHIA YATES & WARREN, 2000
ORDER: DVINOSAURIA YATES & WARREN, 2000
INFRAORDER: TRIMERORHACHOIDA ROMER, 1947
Superfamily: TRIMERORHACHOIDEA Cope, 1882 (sensu Romer, 1947)
Family: TRIMERORHACHIDAE Cope, 1882
Gen. sp indet.
SUBCLASS: LEPOSPONDYLI ZITTEL, 1888
ORDER: NECTRIDEA MIALL, 1875
Family: DIPLOCAULIDAE Cope, 1881
Diplocaulus sp
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: PARAREPTILIA OLSON 1947
INFRACLASS: SAUROPSIDA HUXLEY, 1864
ORDER: COTYLOSAURIA COPE, 1880
SUBORDER: DIADECTOMORPHA Watson, 1917
Family: DIADECTIDAE Cope, 1880
Gen. sp indet.
SUBCLASS: SYNAPSIDA OSBORN, 1903
ORDER: PELYCOSAURIA COPE, 1878
SUBORDER: EUPELYCOSAURIA KEMP, 1982
INFRAORDER: OPHIACHODONTIA NOVA
Family: VARANOPIDAE emend Romer & Price, 1940, REISZ & DILKES, 2003
Subfamily: VARANODONTINAE Reisz & Berman, 2001
Varanops brevirostris
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TEXAS
TAYLOR COUNY
BLACKWOOD RANCH
VALE FORMATION
MIDDLE CLEAR FORK GROUP
LAND-VERTEBRATE FAUNACHRON LOWER TO MIDDLE D
UPPER LEONARDIAN STAGE
UPPER ROTLIEGENDES EPOCH
EARLY PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
NEOTETRAPODA
SUBCLASS: REPTILIOMORPHA SAVE-SODERBERGH, 1934
ORDER: SEYMOURIAMORPHA WATSON, 1917
SUBORDER: SEYMOURIDA TATARINOV, 1971
Superfamily: SEYMOURIOIDEA Williston, 1911 (sensu Tatarinov, 1971)
Family: SEYMOURIIDAE Williston, 1911
Seymouria grandis
= Labidosaurikos meachami
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TEXAS
TAYLOR COUNTY
PATTERSON RANCH
VALE FORMATION
MIDDLE CLEAR FORK GROUP
LAND-VERTEBRATE FAUNACHRON LOWER TO MIDDLE D
UPPER LEONARDIAN STAGE
UPPER ROTLIEGENDES EPOCH
EARLY PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AMPHIBIA LINNAEUS, 1758
SUBCLASS: LABYRINTHODONTIA OWEN, 1860
SUPERORDER: TEMNOSPONDYLIA ZITTEL, 1887
MICROORDER: LIMNARCHIA YATES & WARREN, 2000
ORDER: DVINOSAURIA YATES & WARREN, 2000
INFRAORDER: TRIMERORHACHOIDA ROMER, 1947
Superfamily: TRIMERORHACHOIDEA Cope, 1882 (sensu Romer, 1947)
Family: TRIMERORHACHIDAE Cope, 1882
Trimerorhachis insignis
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