Hansen Bluff HA4 (Pleistocene of the United States)

Also known as Alamosa

Where: Alamosa County, Colorado (37.4° N, 105.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Alamosa Formation, Middle Pleistocene (0.8 - 0.1 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fine channel fill; sandstone

• "in stream channels or in small, lake-filled relict channels"

Size class: mesofossils

Collection methods: bulk, sieve,

Primary reference: K. L. Rogers, C. A. Repenning, R. M. Forester, E. E. Larson, S. A. Hall, G. R. Smith, E. Anderson and T. J. Brown. 1985. Middle Pleistocene (late Irvingtonian: Nebraskan) climatic changes in south-central Colorado. National Geograpic Research 1(4):535-563 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 27638: authorized by John Alroy, entered by John Alroy on 16.12.2002

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Squamata - Colubridae
Heterodon nasicus
Heterodon nasicus Baird and Girard 1852 western hognose snake