Natural Fort (Cretaceous of the United States)

Also known as UCM loc. 78193

Where: Weld County, Colorado (41.0° N, 104.9° W: paleocoordinates 47.6° N, 80.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Laramie Formation, Lancian (70.6 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: "channel"; sandstone

• "extensive soft-sediment deformation within a sandy channel fill"

Size class: mesofossils

Reposited in the UCM

Collection methods: surface (float), surface (in situ),

• "Microvertebrate fossils have been found in situ and as float at the base of the outcrop; screenwashing has not yet been attempted"

Primary reference: G. P. Wilson, M. Dechesne, and I. R. Anderson. 2010. New latest Cretaceous mammals from northeastern Colorado with biochronologic and biogeographic implications. Journal of Vertebrate Paleontology 30(2):499-520 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 96082: authorized by John Alroy, entered by John Alroy on 14.05.2010, edited by Roger Benson and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines -
Compsemys victa1 Leidy 1856 turtle
 Testudines - Baenidae
"Peckemys brinkman" = Cedrobaena brinkman2
"Peckemys brinkman" = Cedrobaena brinkman2 Lyson and Joyce 2009 turtle
UCM 49318 (partial skull)
Mammalia
 Theriiformes - Peradectidae
"Protolambda hatcheri" = Aletridelphys hatcheri
"Protolambda hatcheri" = Aletridelphys hatcheri Osborn 1898 metatherian