KANSAS

SOUTHWESTERN TREGO COUNTY

EXACT LOCALITY INFORMATION IS ON FILE AT FHSM

BELOW HATTIN'S (1982) MARKER UNITE (MU) 2

SMOKY HILL CHALK MEMBER

NIOBRARA CHALK

UPPER CONIACIAN STAGE

LOWER SENONIAN SUBEPOCH

LOWER 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: 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

Subfamily: DOLICHOSAURIDAE Gervais, 1852

Tribe: DOLICHOSAURINI Gervais, 1852

cf. Coniasaurus sp

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KANSAS

TREGO COUNTY

7 MILES SOUTHEAST OF CASTLE ROCK

LOWER PART OF THE SMOKY HILL CHALK MEMBER

NIOBRARA CHALK FORMATION

UPPER CONIACIAN STAGE

LOWER MOST SENONIAN SUBEPOCH-SANTONIAN STAGE

LOWER SENONIAN SUBEPOCH

LOWER GULF EPOCH

EARLY 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: RUSSELLOSAURINAE Bell, 1993

Tribe: PLIOPLATECARPINI Dollo, 1884 (sensu Russell, 1967)

Plesioplatecarpus planifrons
= *Platecarpus planifrons

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KANSAS

TREGO COUNTY

NIOBRARA CHALK FORMATION

UPPER CONIACIAN STAGE

LOWER MOST SENONIAN SUBEPOCH-SANTONIAN STAGE

LOWER SENONIAN SUBEPOCH

LOWER GULF EPOCH

EARLY 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: RUSSELLOSAURINAE Bell, 1993

Tribe: PLIOPLATECARPINI Dollo, 1884 (sensu Russell, 1967)

Platecarpus planifrons

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KANSAS

TREGO COUNTY

LOW CHALK

NIOBRARA FORMATION

UPPER 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: 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 kansasensis

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KANSAS

TREGO COUNTY

SALINE RIVER

NIOBRARA 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)

*Porthochelys laticeps

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KANSAS

TREGO COUNTY

LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

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

Incertae sedis

Non Platecarpus, *P anguliferus
= Sironectes anguliferus

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KANSAS

TREGO COUNTY

APPROXIMATELY 12 KM NORTHWEST OF WAKEENEY

GARRETT RANCH

SMOKY HILL CHALK MEMBER

NIOBRARA FORMATION

UPPER CONIACIAN TO LOWER SANTONIAN STAGE

EARLY SENONIAN SUBEPOCH

EARLY GULF EPOCH

EARLY LATE CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

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: RUSSELLOSAURINAE Bell, 1993

Tribe: PLIOPLATECARPINI Dollo, 1884 (sensu Russell, 1967)

*Ectenosaurus clidastoides
= Platecarpus clidastoides

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KANSAS

TREGO COUNTY

“NEAR WILCAT CANYON”

NIOBRARA FORMATION

CONIACIAN STAGE

LOWER SENONIAN SUBEPOCH

LOWER GULF EPOCH

LATE CRETACEOUS

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: 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

Family: PTERANODONTIDAE Marsh, 1876

Geosternbergia sternbergi
= Pteranodon sternbergi
= Pteranodon (Sternbergia) sternbergi
= Pteranodon (Geosternbergia) sternbergi

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KANSAS

TREGO COUNTY

SW ¼, SEC. 25, T11S, R23W

LOWER SMOKY HILL CHALK

NIOBRARA FORMATION

VOLVICERAMUS GRANDIS ZONE

SANTONIAN OR CAMPANIAN STAGE

SENONIAN SUBEPOCH

GULF EPOCH

LATE CRETACEOUS

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: 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

Family: NYCTOSAURIDAE Bennett, 1989

Nyctosaurus sp

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KANSAS

TREGO COUNTY

S ½, SEC. 14, T11S, R23W

LOWER SMOKY HILL CHALK

NIOBRARA FORMATION

VOLVICERAMUS GRANDIS ZONE

SANTONIAN OR CAMPANIAN STAGE

SENONIAN SUBEPOCH

GULF EPOCH

LATE CRETACEOUS

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: 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

Family: NYCTOSAURIDAE Bennett, 1989

Nyctosaurus sp

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KANSAS

TREGO COUNTY

10 M NW OF WAKEENEY

UPPER SMOKY HILL MEMBER

NIOBRARA FORMATION

SANTONIAN OR CAMPANIAN STAGE

SENONIAN SUBEPOCH

GULF EPOCH

LATE CRETACEOUS

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: 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

Family: PTERANODONTIDAE Marsh, 1876

Incertae sedis

Pteranodon sp

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KANSAS

TREGO COUNTY

9 M NW WAKEENEY

UPPER SMOKY HILL MEMBER

NIOBRARA FORMATION

SANTONIAN OR CAMPANIAN STAGE

SENONIAN SUBEPOCH

GULF EPOCH

LATE CRETACEOUS

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: 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

Family: PTERANODONTIDAE Marsh, 1876

Incertae sedis

Pteranodon sp

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KANSAS

TREGO COUNTY

SOUTH SIDE OF SALINE RIVER

NIOBRARA FORMATION

CONIACIAN STAGE

LOWER SENONIAN SUBEPOCH

LOWER GULF EPOCH

LATE CRETACEOUS

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: 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

Family: PTERANODONTIDAE Marsh, 1876

Geosternbergia sternbergi

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KANSAS

TREGO COUNTY

NEAR CASTEL ROOK

UPPER SMOKY HILL MEMBER

NIOBRARA FORMATION

SANTONIAN OR CAMPANIAN STAGE

SENONIAN SUBEPOCH

GULF EPOCH

LATE CRETACEOUS

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: 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

Family: PTERANODONTIDAE Marsh, 1876

Geosternbergia sternbergi
= *Pteranodon (Occidentalia) eatoni
= Pteranodon eatoni
= Occidentalia eatoni

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