SOUTHERN COLIN COUNTY
PROBABLY SMU LOC. N. 468
MUDDY LIMESTONE
LOWER ATCO FORMATION
AUSTIN GROUP
CONIACIAN STAGE
LOWERMOST SENONIAN SUBEPOCH
GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
INFRACLASS: 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
SUBORDER: EUPTERODACTYLOIDEA BENNETT, 1994
Superfamily: PTERANODONTIDEA Marsh, 1876
Incertae sedis
*Alamodactylus byrdi
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TEXAS
COLLIN COUNTY
NEAR McKINHEY
AUSTIN CHALK
MIDDLE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: AVES LINNAEUS, 1758
AVEBREVICAUDA PAUL, 2001
SUBCLASS: CARINATE MERREM, 1813
INFRACLASS: NEORNITHES GADOW, 1893
PARVCLASS: NEOGNATHAE PYCRAFT 1900
ORDER: GALLIFORMES (TEMMINCK, 1820)
SUBORDER: PANGALLIFORMES CLARKE, 2004
Incertate sedis
Austinornis lentus
= Ichthyornis lentus
= *Graculavus lentus
= Pedioecetes phasianellus
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TEXAS
COLLIN COUNTY
NEAR FARMERSVILLE
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1903
INFRACLASS: NEODIAPSIDA BENTON, 1985
LEGION: LEPIDOSAUROMORPHA BENTON, 1983
SUBLEGION: LEPIDOSAURIA HAECKEL, 1866 (DUMERIL & BIBRON, 1839)
MAGNORDER: SQUAMATA, OPPEL, 1811
SUPERORDER: LACERTILIA OWEN, 1842
GRANDORDER: SCINCOGEKKONOMORPHA SUKHANOV, 1961
MICRORDER: SCINCOMORPHA CAMP, 1923
ORDER: ANGUIMORPHA FURBRINGER, 1900
SUBORDER: DIPLOGLOSSA COPE, 1864
INFRAORDER: THECAGLOSSA COPE, 1890
PARVORDER: MONSTERSAURIA NORELL & GAO, 1977
Superfamily: VARANOIDEA Gray, 1827 (sensu Camp, 1923)
Family: MOSASAURIDAE Gervais, 1853
Infrafamily: NATANIA
Subfamily: MOSASAURINAE Gervais, 1853 (sensu Williston, 1897)
Tribe: GLOBIDENTINI Dollo, 1924 (sensu Russell, 1967)
Globidens alabamaensis
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TEXAS
COLLIN COUNTY
NEAR FARMERSVILLE
TAYLOR MARL
PROBABLY NEAR THE UPPER CONTACT OF THIS FORMATION
LATE CRETACEOUS
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: DAIOCRYPTODIRA GAFFNEY & MEYLAN, 1988
MICRORDER: CENTROCRYPTODIRA GAFFNEY & MEYLAN, 1988
ORDER: POLYCRPTODIRA GAFFNEY & MEYLAN, 1988
SUBORDER: PROCOELOCRYPTODIRA GAFFNEY & MEYLAN, 1988
INFRAORDER: CHELONOIDEA GAFFNEY & MEYLAN, 1988
Superfamily: DERMOCHELYOIDEA Willams, 1950
Family: TOXOCHELYIDAE Baur, 1895
Subfamily: TOXOCHELYINAE Baur, 1895 (sensu Zangerl, 1953)
Toxochelys sp
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TEXAS
COLLIN COUNTY
1 M E OF CULEOKA IN THE LAVON RESERVIOR AREA
TAYLOR FORMATION
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1903
INFRACLASS: NEODIAPSIDA BENTON, 1985
LEGION: LEPIDOSAUROMORPHA BENTON, 1983
SUBLEGION: LEPIDOSAURIA HAECKEL, 1866 (DUMERIL & BIBRON, 1839)
MAGNORDER: SQUAMATA, OPPEL, 1811
SUPERORDER: LACERTILIA OWEN, 1842
GRANDORDER: SCINCOGEKKONOMORPHA SUKHANOV, 1961
MICRORDER: SCINCOMORPHA CAMP, 1923
ORDER: ANGUIMORPHA FURBRINGER, 1900
SUBORDER: DIPLOGLOSSA COPE, 1864
INFRAORDER: THECAGLOSSA COPE, 1890
PARVORDER: MONSTERSAURIA NORELL & GAO, 1977
Superfamily: VARANOIDEA Gray, 1827 (sensu Camp, 1923)
Family: MOSASAURIDAE Gervais, 1853
Infrafamily: NATANIA
Subfamily: TYLOSAURINAE Williston, 1897
Tylosaurus sp
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