Also known as UCM 78009; Kladder M
Where: Mesa County, Colorado (39.3° N, 108.2° W: paleocoordinates 44.6° N, 90.8° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Atwell Gulch Member (DeBeque Formation), Clarkforkian (56.8 - 55.8 Ma)
• "lower part of Atwell Gulch Member"; said to be Clarkforkian
• group of beds-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size classes: macrofossils, mesofossils
Primary reference: B. Patterson and R. M. West. 1973. A new late Paleocene phenacodont (Mammalia; condylarthra) from western Colorado. Breviora 403:1-7 [J. Alroy/J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 15252: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Leidyosuchus riggsi n. sp.4
Leidyosuchus riggsi n. sp.4 Schmidt 1938 crocodilian from "Debeque" according to Schmidt, but "Hell's Half Acre" according Bruner 1991
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Mammalia | |
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