Where: Uintah County, Utah (40.1° N, 109.3° W: paleocoordinates 42.8° N, 98.3° W)
• coordinate based on nearby landmark
When: Uinta Formation, Uintan (46.2 - 39.7 Ma)
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Primary reference: D. R. Prothero. 1996. Magnetic stratigraphy and biostratigraphy of the middle Eocene Uinta Formation, Uinta Basin, Utah. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 3-24 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 16589: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Roger Benson, Jonathan Marcot, Terri Cleary and Evangelos Vlachos
Creative Commons license: CC BY (attribution)
Taxonomic list
at top of Prothero's Wagonhound Canyon section in eastern Uintah County
between White River Pocket and Myton Pocket based on Peterson 1928a, who places it at the base of Uinta C
magnetic polarity stratigraphy of Prothero 1996a suggests that Kennedy's Hole and Myton Pocket are at a very similar level, but that an exact ordering is impossible
Reptilia | |
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"Baena emiliae" = Baena arenosa6
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"Hadrianus robustus n. sp." = Hadrianus corsoni3
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"Amyda scutumantiquum" = Oliveremys uintaensis3
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Mammalia | |
Protoreodon petersoni Gazin 1955 agriochoerid
Protoreodon pumilus Marsh 1875 agriochoerid | |
Leptotragulus proavus Scott and Osborn 1887 protoceratid
Leptoreodon marshi Wortman 1898 protoceratid | |
Protylopus petersoni Wortman 1898 even-toed ungulate probably the type, see Gazin 1955; however, Riggs 1912 indicates that "Protylopus" (presumably this material) is from below the Amynodon Sandstone in Kennedy's Basin; may also include CM specimen from "eastern part of the Uinta Basin at the base of horizon C" of Peterson 1919
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Hylomeryx quadricuspis n. sp., "Bunomeryx montanus n. sp." = Bunomeryx montanus, "Bunomeryx elegans" = Bunomeryx montanus
Hylomeryx quadricuspis n. sp. Peterson 1919 even-toed ungulate see Gazin 1955: from "south of Kennedy's hole, west of Dragon-Vernal road, Uinta County"; "Base of Horizon C" according to Peterson 1919
"Bunomeryx montanus n. sp." = Bunomeryx montanus Wortman 1898 even-toed ungulate see Gazin 1955, who does not give provenance
"Bunomeryx elegans" = Bunomeryx montanus Wortman 1898 even-toed ungulate | |
Amynodon advenus Marsh 1875 odd-toed ungulate | |
Triplopus obliquidens Scott and Osborn 1887 odd-toed ungulate
Triplopus implicatus Cope 1873 odd-toed ungulate this or the following may include "Hyrachyus douglassi" of Wood 1934 from Kennedy's Hole (= Triplopus sp. according to Radinsky 1967a)
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Isectolophus annectens7 Scott and Osborn 1887 odd-toed ungulate Devil's Playground near Kennedy's Hole, Uinta C; not clear why this is omitted by Prothero
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Protitanotherium sp., "Pseudodiplacodon sp." = Diplacodon1, Diplacodon emarginatus n. sp.5, Metatelmatherium ultimum n. sp.
Protitanotherium sp. Osborn 1908 brontothere may include type of "P. superbum" of Osborn 1908 from "Horizon C, probably higher levels" and "P. emarginatum" of Kay 1957 from "Uinta C"
Metatelmatherium ultimum n. sp. Osborn 1908 brontothere includes both the type of "Manteoceras uintensis" Douglass 1909d from 5 mi NE of Well 2, lower "horizon 'C' and the type of "Telmatherium ultimum" Osborn 1908 from "lower portion of Uinta C"; may also include type of "Telmatherium (?) altidens" of Osborn 1908 from "level C"
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Oxyaenodon dysodus1 Matthew 1899 creodont species present according to Prothero; type present in "Uinta C" according to Denison
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Procynodictis vulpiceps Wortman and Matthew 1899 placental | |
Thisbemys medius Peterson 1919 rodent | |
"Reithroparamys sciuroides" = Reithroparamys sciuroides1, "Ischyrotomus gidleyi n. sp." = Reithroparamys sciuroides7
"Reithroparamys sciuroides" = Reithroparamys sciuroides1 Scott and Osborn 1887 rodent see also Wood 1962, who does not give the exact locality: type; presumably "Leptotomus sp." of Kay 1957
"Ischyrotomus gidleyi n. sp." = Reithroparamys sciuroides7 Scott and Osborn 1887 rodent "Base of Horizon C... Four miles northeast of Well No. 2, eastern end of Uinta Basin": listed as "Reithroparamys gidleyi" from "Myton" by Wood 1962 and Black and Sutton 1984, and from Kennedy's Hole by Prothero
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Protoptychus hatcheri Scott 1895 rodent see also Wilson 1949d, who erroneously lists the type as being from Myton
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Ourayia uintensis Osborn 1895 tarsier see also Olsen 1961, Krishtalka 1978; includes material assigned to "Hemiacodon jepseni" by Robinson 1968
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Hyopsodus uintensis n. sp.2
Hyopsodus uintensis n. sp.2 Osborn 1902 condylarth type of Osborn 1902 from "Uinta C"; see also Krishtalka 1979; Hyopsodus is not discussed at all by Prothero, and the early AMNH Uinta C material is mostly from Kennedy's Hole
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