USGS locality 5121, near Trinidad, CO, Poison Canyon Fm (Paleocene of the United States)

Where: Colorado (37.3° N, 104.8° W: paleocoordinates 43.0° N, 85.3° W)

• coordinate estimated from map

When: Poison Canyon Formation, Paleocene (66.0 - 56.0 Ma)

Environment/lithology: fluvial; coarse-grained sandstone and conglomerate

• coal barren, massive coarse textured sandstones and conglomerates

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by J.H. Gardner, Aug. 30, 1908.

Primary reference: R. W. Brown. 1962. Paleocene flora of the Rocky Mountains and Great Plains. United States Geological Survey Professional Paper 375:1-119 [P. Wilf/J. Sessa/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41183: authorized by Peter Wilf, entered by Jocelyn Sessa on 07.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Species lists for Brown 1962 were compiled from the publication and provided for the Paleobiology Database by Drs. Steven R. Manchester and Peter R. Crane.
Show authors, comments, and common names
Angiospermae
 Saxifragales - Cercidiphyllaceae
Cercidiphyllum arcticum