Hansen Bluff TS (Pleistocene of the United States)

Also known as Alamosa

Where: Alamosa County, Colorado (37.4° N, 105.8° W: paleocoordinates 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 20370: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• probably "TS-1" locality of Goodwin 1995a, which yields Cynomys gunnisoni
Osteichthyes
 Salientia - Pelobatidae
"Scaphiopus bombifrons" = Spea bombifrons
"Scaphiopus bombifrons" = Spea bombifrons Cope 1863 Plains spadefoot
 Salientia - Bufonidae
Bufo sp. Laurenti 1768 toad
 Caudata - Urodela
Ambystoma tigrinum Green 1825 tiger salamander
Aves
 Gruiformes - Rallidae
Fulica americana Gmelin 1789 American coot
Reptilia
 Squamata - Iguanidae
Phrynosoma douglassi horned lizard
Mammalia
 Rodentia - Cricetidae
"Terricola meadensis" = Microtus meadensis
"Terricola meadensis" = Microtus meadensis Hibbard 1944 vole
 Rodentia - Sciuridae
Spermophilus tridecemlineatus Mitchell 1821 thirteen-lined ground squirrel
 Rodentia - Geomyidae
Geomys sp. Rafinesque 1817 pocket gopher
 Lagomorpha - Leporidae
Sylvilagus sp. Gray 1867 cottontail rabbit