Also known as Guymon; OMNH V52; UCMP V-2902
Where: Texas County, Oklahoma (36.7° N, 101.4° W: paleocoordinates 37.0° N, 99.7° W)
• coordinate based on political unit
When: Ogallala Formation, Hemphillian (10.3 - 4.9 Ma)
• Baskin 1981 says late Hemphillian
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Primary reference: C. J. Hesse. 1936. A Pliocene Vertebrate Fauna From Optima, Oklahoma. University of California Publications, Bulletin of the Department of Geological Sciences 24(3):57-70 [J. Alroy/J. Alroy/J. Marcot]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 18304: authorized by John Alroy, entered by John Alroy on 05.08.1992, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
new material of Savage 1941 seems to be entirely from a later collection
see also Schultz 1990e
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"Agriotherium schneideri" = Huracan schneideri9
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Arctonasua fricki n. sp.2
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Adelphailurus sp.10, "Machairodus cf. coloradensis" = Amphimachairodus coloradensis10, Lynx proterolyncis9
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Neohipparion gidleyi10, Neohipparion eurystyle, Nannippus lenticularis9, Astrohippus ansae1, Dinohippus leidyanus6
Neohipparion eurystyle Cope 1893 hipparionine horse definitely Neohipparion based on figures of Hesse and Savage: JA pers. obs. 10.7.96
Nannippus lenticularis9 Cope 1893 hipparionine horse definitely Nannippus based on Savage's figures: JA pers. obs. 10.7.96
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Teleoceras hicksi7 Cook 1927 rhinoceros pers. comm.: probably "T. cf. fossiger" of Savage 1941 and "T. sp."
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Pediomeryx hemphillensis9 Stirton 1936 ruminant "? Drepanomeryx"; includes type of "Yumaceras falkenbachi" of Frick 1937
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