USNM Loc. 42233 (Cretaceous to of the United States)

Also known as MTC WY-09009

Where: Big Horn County, Wyoming (44.8° N, 108.3° W: paleocoordinates 44.3° N, 60.2° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Little Sheep Mudstone Member (Cloverly Formation), Aptian to Aptian (125.0 - 100.5 Ma)

• Unit V

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; tuffaceous, intraclastic, gray, green claystone

• "Green-gray bentonitic, intraclastic claystone"

Size class: mesofossils

Collected by M. Carrano in 2009; reposited in the USNM

Collection methods: bulk, quarrying, surface (float), surface (in situ), sieve,

Primary reference: M. P. J. Oreska, M. T. Carrano, and K. M. Dzikiewicz. 2013. Vertebrate paleontology of the Cloverly Formation (Lower Cretaceous), I: faunal composition, biogeographic relationships, and sampling. Journal of Vertebrate Paleontology 33(2):264-292 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 137604: authorized by Matthew Carrano, entered by Matthew Carrano on 18.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Avetheropoda - Dromaeosauridae
Deinonychus antirrhopus Ostrom 1969 coelurosaur