Devil's Playground (DP-11) (Eocene of the United States)

Where: Sweetwater County, Wyoming (41.2° N, 109.7° W: paleocoordinates 45.2° N, 96.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Twin Buttes Member (Bridger Formation), Bridgerian (50.3 - 46.2 Ma)

• from the Black Mountain turtle layer (BMtl) in Unit B

• bed-level stratigraphic resolution

Environment/lithology: lacustrine - large; mudstone

• "a shallow, basin-wide lacustrine environment" buried by a "large-scale episode of volcanism"
• "lobes of mudstone" lying on "prominent, ledge-forming limestones"

Size class: macrofossils

Primary reference: L. R. Brand, H. T. Goodwin, P. D. Ambrose and H. P. Buchheim. 2000. Taphonomy of turtles in the Middle Eocene Bridger Formation, SW Wyoming. Palaeogeography, Palaeoclimatology, Palaeoecology 162(1-2):171-189 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 16209: authorized by John Alroy, entered by John Alroy on 15.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• species names not given

•total NISP 9

Show authors, comments, and common names
Mammalia
 Condylarthra - Hyopsodontidae
Hyopsodus sp.
Hyopsodus sp. Leidy 1870 condylarth
 Insectivora -
Insectivora indet.
Insectivora indet. Bowdich 1821 insectivoran
 Perissodactyla - Equidae
Orohippus sp.
Orohippus sp. Marsh 1872 horse
 Primates - Notharctidae
Notharctus sp.
Notharctus sp. Leidy 1870 primate
 Primates - Omomyidae
Omomys sp.
Omomys sp. Leidy 1869 tarsier
 Primates - Microsyopidae
Microsyops sp.
Microsyops sp. Leidy 1872 primate
Reptilia
 Testudines - Trionychidae
Trionychidae indet.
Trionychidae indet. Gray 1825 softshell turtle
 Testudines - Geoemydidae
Echmatemys sp.
Echmatemys sp. Hay 1906 turtle