MP-40 (Eocene of the United States)

Where: Park County, Wyoming (44.6° N, 108.9° W: paleocoordinates 49.2° N, 92.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Willwood Formation, Early/Lower Eocene (55.8 - 48.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; lithified, red siliciclastic sediments

• "bright orange [mudstone] exposures"

Size classes: macrofossils, mesofossils

Reposited in the UMMP

Collection methods: surface (float), surface (in situ),

Primary reference: P. D. Gingerich. 1989. New earliest Wasatchian mammalian fauna from the Eocene of northwestern Wyoming: composition and diversity in a rarely sampled high-floodplain assemblage. University of Michigan Papers on Paleontology 28:1-97 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 27351: authorized by John Alroy, entered by John Alroy on 03.12.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Wa-0
Mammalia
 Theriamorpha - Viverravidae
Didymictis leptomylus Cope 1880 placental
Reptilia
 Squamata - Anguidae
cf. Proxestops sp. Gauthier 1982 squamates
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843 gar