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/J. Sessa]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.
Magnoliopsida
 Saxifragales - Cercidiphyllaceae