Opal (UM BB-17) (Eocene of the United States)

Where: Lincoln County, Wyoming (41.8° N, 110.7° W)

• Paleocoordinates: 49.5° N, 87.4° W (Wright 2013)

• coordinate based on political unit

• small collection-level geographic resolution

When: Bridger Formation, Bridgerian (50.5 - 46.2 Ma)

Environment/lithology: terrestrial

Primary reference: G. F. Gunnell. 1998. Mammalian Fauna From the Lower Bridger Formation (Bridger A, Early Middle Eocene) of the Southern Green River Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 30(3):83-130 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 16313: authorized by John Alroy, entered by John Alroy on 21.09.1999

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Cimolesta - Apatemyidae
Apatemys bellulus
Apatemys bellulus Marsh 1872 eutherian
 Condylarthra - Hyopsodontidae
Hyopsodus minusculus
Hyopsodus minusculus Leidy 1873 condylarth
 Rodentia - Ischyromyidae
Thisbemys corrugatus
Thisbemys corrugatus Wood 1959 rodent
 Rodentia - Sciuravidae
Sciuravus nitidus
Sciuravus nitidus Marsh 1871 rodent
 Primates - Omomyidae
Washakius insignis, Omomys carteri
Washakius insignis Leidy 1873 tarsier
Omomys carteri Leidy 1869 tarsier
 Primates - Microsyopidae
Microsyops cf. elegans
Microsyops cf. elegans Marsh 1871 primate
 Primates - Notharctidae
Smilodectes mcgrewi, Notharctus robinsoni
Smilodectes mcgrewi Gingerich 1979 primate
Notharctus robinsoni Gingerich 1979 primate
 Perissodactyla - Hyrachyidae
Hyrachyus sp.
Hyrachyus sp. Leidy 1871 odd-toed ungulate
 Artiodactyla - Homacodontidae
Homacodontidae indet.
Homacodontidae indet. Marsh 1849 even-toed ungulate
 Ferae - Metacheiromyidae
Brachianodon westorum, Metacheiromys sp.
Brachianodon westorum Gunnell and Gingerich 1993 placental
Metacheiromys sp. Wortman 1903 placental