Also known as basal Unit B
Where: Trego County, Kansas (39.1° N, 99.8° W: paleocoordinates 40.3° N, 97.2° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Ogallala Formation, Clarendonian (12.5 - 9.4 Ma)
• from a bed about 1 - 2 feet thick; overlies Locality 29 (see)
• bed-level stratigraphic resolution
Environment/lithology: "channel"; unlithified sandstone and green claystone
Size classes: macrofossils, mesofossils
Collection methods: bulk, surface (float), sieve,
Primary reference: R. L. Wilson. 1968. Systematics and faunal analysis of a Lower Pliocene vertebrate assemblage from Trego County, Kansas. Contributions from the Museum of Paleontology, University of Michigan 22(7):75-126 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 18450: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Richard Hulbert
Creative Commons license: CC BY (attribution)
Taxonomic list
Actinopteri | |
Aplodinotus cf. grunniens Rafinesque 1819 freshwater drum | |
Fundulus sp. Lacépède 1803 | |
Ictalurus lambda catfish | |
? Notropis sp. Rafinesque 1818 carp-like fish | |
Ictiobus sp. Alvarado-Ortega et al. 2006 carp-like fish | |
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Amia calva Linnaeus 1766 bowfin | |
Amphibia | |
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Rana cf. areolata frog
Rana sp. Linnaeus 1758 frog | |
Hyla sp., Hyla cf. squirella8, Hyla cf. cinerea8, Hyla cf. gratiosa, Pseudacris cf. clarki, Acris sp.
Hyla cf. gratiosa Le Conte 1856 barking treefrog
Pseudacris cf. clarki Baird 1854 spotted chorus frog
Acris sp. Dumeril and Bibron 1841 cricket frog | |
Tregobatrachus hibbardi n. gen. n. sp.8
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Reptilia | |
Gerrhonotus mungerorum n. sp. alligator lizard | |
Eumeces hixsonorum n. sp.8
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Colubridae indet.8, cf. Paleoheterodon sp., Paleoheterodon sp.8, Colubrinae indet.8, Elaphe sp.8, Texasophis wilsoni n. sp.9, Lampropeltis similis8, "Natrix hillmani" = Nerodia hillmani, Thamnophis sp.
cf. Paleoheterodon sp. Holman 1964 colubrid snake
"Natrix hillmani" = Nerodia hillmani Wilson 1968 water snake
Thamnophis sp. Fitzinger 1843 garter snake | |
Ogmophis pliocompactus n. sp.8
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Tregophis brevirachis n. gen. n. sp.8
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"Chelonia indet." = Testudines8
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Aves | |
Ortalis affinis n. sp.
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Nettion ogallalae n. sp.4
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Pliopicus brodkorbi n. gen. n. sp.
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Mammalia | |
Proboscidea indet. proboscidean | |
"Eucastor phillisi n. sp." = Prodipoides phillisi
"Eucastor phillisi n. sp." = Prodipoides phillisi Wilson 1968 beaver referred, includes "E. cf. tortus" of Hibbard and Phillis 1945; NISP about 19
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"Phelosaccomys hibbardi" = Parapliosaccomys hibbardi11
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Cricetidae indet., Cricetidae indet.1, cf. Copemys sp., "Tregomys shotwelli n. gen. n. sp." = Copemys shotwelli, "Tregomys pisinnus" = Copemys pisinnus1
Cricetidae indet. Fischer von Waldheim 1817 mouse
cf. Copemys sp. Wood 1936 mouse
"Tregomys shotwelli n. gen. n. sp." = Copemys shotwelli Wilson 1968 mouse includes type of "Gnomomys saltus"; (8+18)
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"Zapodinae indet." = Zapodidae Coues 1875 jumping mouse
? Sicistinae indet. Allen 1901 jumping mouse | |
"Tamiini indet." = Marmotini1
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Talpidae indet., Domninoides mimicus n. sp.
Talpidae indet. Fischer de Waldheim 1817 mole | |
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Martes stirtoni n. sp. Wilson 1968 marten | |
Canidae indet. Fischer de Waldheim 1817 canid | |
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