USGS locality 16214 (Cretaceous to of the United States)

Where: Larimer County, Colorado (40.7° N, 105.0° W: paleocoordinates 47.3° N, 75.9° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Baculites jenseni ammonoid zone, Richard Sandstone Member (Pierre Shale Formation), Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)

• "latest Campanian or earliest Maastrichtian" based on zonal assignment (jenseni zone does span the boundary: see McArthur et al. 2007)

• member-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

• certainly lithified based on preservation of figured specimens

Size class: macrofossils

Collected by R. G. Coffin; reposited in the USGS

Primary reference: G. A. Bishop. 1985. A new crab, Eomunidopsis cobbani n. sp. (Crustacea, Decapoda), from the Pierre Shale (Early Maastrichtian) of Colorado. Journal of Paleontology 59(3):601-604 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90157: authorized by John Alroy, entered by John Alroy on 09.07.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• crabs are "associated with numerous molluscs and fossil wood fragments" in this area
Malacostraca
 Decapoda - Galatheidae
Eomunidopsis cobbani Bishop 1985 decapod
 Decapoda - Homolidae
Homolopsis sp. Bell 1863 crab