Also known as IMNH 848; IMNH 853
Where: Power County, Idaho (42.8° N, 112.9° W: paleocoordinates 43.2° N, 111.2° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: upper Member (Starlight Formation), Hemphillian (10.3 - 4.9 Ma)
• said to be early Hemphillian
•"most of the identifiable fossils... were found" in a "2-2.5 m thick brown clay unit" in the upper member
•immediately overlying "0.6 - 1.3 m thick brilliant white ash" dated at "8.14 +/- 0.34 Ma" by SCLF Ar/Ar on plagioclase
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial-lacustrine; volcaniclastic, brown, silty claystone
Collection methods: detailed contextual information is given by Tedrow et al. 2001
Primary reference: A. R. Tedrow, J. A. Baskin, and S. F. Robison. 1999. An additional occurrence of the genus Simocyon (Mammalia, Carnivora, Procyonidae) in North America. Utah Geological Survey Miscellaneous Publication 99-1:487-493 [J. Alroy/J. Alroy/M. Uhen]more details
PaleoDB collection 19034: authorized by John Alroy, entered by John Alroy on 19.05.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
•all sciurid material is from IMNH 848
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Marmotini indet.2, Spermophilus (Otospermophilus) sp., "Spermophilus (Otospermophilus) gidleyi" = Citellus (Otospermophilus) gidleyi2, Paratamias tarassus n. gen. n. sp.2
Spermophilus (Otospermophilus) sp. Cuvier 1825 ground squirrel
"Spermophilus (Otospermophilus) gidleyi" = Citellus (Otospermophilus) gidleyi2 Merriam et al. 1925 squirrel not the same as Spermophilus sp. listed above
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Megacamelus sp. Frick 1929 camel | |
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