Bill’s Smilodectes BLM locality (Eocene of the United States)

Also known as DMNS loc. 885

Where: Sweetwater County, Wyoming (41.4° N, 109.8° W: paleocoordinates 45.3° N, 96.1° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Black's Fork Member (Bridger Formation), Bridgerian (50.3 - 46.2 Ma)

• "approximately 1-m-thick horizon... about 4–5 m below Gazin’s (1965) Sugar White Layer"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; green mudstone

• "slate green coloured mudstone"

Size class: macrofossils

Collected by R. K. Stucky; reposited in the DMNH

Primary reference: M. Spaulding, J. J. Flynn, and R. K. Stucky. 2010. A new basal Carnivoramorphan (Mammalia) from the ‘Bridger B’ (Black’s Fork member, Bridger Formation, Bridgerian Nalma, middle Eocene) of Wyoming, USA. Palaeontology 53(4):815-832 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 129895: authorized by John Alroy, entered by John Alroy on 29.06.2012, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

 Primates - Omomyidae
Omomys carteri Leidy 1869 tarsier
 Primates - Notharctidae
Smilodectes gracilis Marsh 1871 primate
 Rodentia - Sciuravidae
Sciuravus nitidus Marsh 1871 rodent
Sciuravus metalinguas Anderson 2017 rodent
 Perissodactyla - Brontotheriidae
Palaeosyops sp. Leidy 1870 brontothere
 Perissodactyla - Hyrachyidae
Hyrachyus sp. Leidy 1871 odd-toed ungulate
 Perissodactyla -
Helaletes sp. Marsh 1872 odd-toed ungulate
 Perissodactyla - Equidae
Orohippus sp. Marsh 1872 horse
 Ferae -
Dawsonicyon isami n. gen. n. sp.
Dawsonicyon isami n. gen. n. sp. Spaulding et al. 2010 placental
 Ungulata - Hyopsodontidae
Hyopsodus sp. Leidy 1870 condylarth
 Hyaenodonta - Hyaenodontidae
Sinopa sp. Leidy 1871 eutherian
 Hyaenodonta -
"Thinocyon mustelinus" = Limnocyon velox
"Thinocyon mustelinus" = Limnocyon velox Marsh 1872 eutherian