Where: Logan County, Colorado (40.9° N, 103.3° W: paleocoordinates 41.6° N, 99.4° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Pawnee Creek Formation, Hemingfordian (20.4 - 16.0 Ma)
• originally called the "Martin Canyon Beds," but Galbreath 1953, shows these are the basal beds of the Pawnee Creek Formation (Hemingfordian)
Environment/lithology: fluvial; lithified, massive, bioturbated siltstone and fine-grained sandstone
Size class: macrofossils
• "Parts of bones, especially vertebrae, are often eaten away in a manner that suggests the work of insects (cf. Dermestes). The skeleton of Phlaocyon suffered considerably in this way. "
•
•"The specimen was found in the rock mixed with skulls and skeletons of two adult and three young Merycochœri, all within a space of six feet square."
Collected by Handel T. Martin in 1898; reposited in the AMNH
Primary reference: E. C. Galbreath. 1953. A contribution to the Tertiary geology and paleontology of northeastern Colorado. University of Kansas Paleontological Contributions Vertebrata 4:1-120 [J. Alroy/J. Alroy/J. Marcot]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 17964: authorized by John Alroy, entered by John Alroy on 26.03.1995
Creative Commons license: CC BY (attribution)
Taxonomic list
see also Galbreath 1953
Mammalia | |
Equidae indet. Gray 1821 horse | |
Camelidae indet. Gray 1821 camel | |
Merycochoerus magnus Loomis 1924 oreodont | |
Phlaocyon leucosteus n. sp.
Phlaocyon leucosteus n. sp. Matthew 1899 bone-crushing dog |