USNM Loc. 42179, Ostrom's Beach (Cretaceous to of the United States)

Also known as MT WY-04024

Where: Big Horn County, Wyoming (44.5° N, 107.9° W: paleocoordinates 44.0° N, 59.9° W)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

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

• Unit V

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; lithified, gray, white claystone

• "white-gray claystone"

Size class: macrofossils

Collected by M. Carrano in 2004–2010; reposited in the UNSM

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

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 137566: authorized by Matthew Carrano, entered by Matthew Carrano on 18.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Malacostraca
 Decapoda -
Pleocyemata indet. Burkenroad 1963 decapod
crayfish gastrolith
Reptilia
 Testudines -
Testudines "indet. A" Batsch 1788 turtle
Testudines indet. Batsch 1788 turtle
? Glyptops pervicax Hay 1908 turtle
 Testudinata - Helochelydridae
Naomichelys speciosa Hay 1908 turtle
 Saurischia -
? Titanosauriformes indet. Salgado et al. 1997 sauropod
Theropoda indet. Marsh 1881 theropod
Tetanurae indet. Gauthier 1986 tetanuran
 Avetheropoda - Caenagnathidae
Microvenator celer Ostrom 1970 coelurosaur
vertebra
 Avetheropoda - Dromaeosauridae
Deinonychus antirrhopus Ostrom 1969 coelurosaur
 Ornithischia -
Ornithischia indet. Seeley 1888 ornithischian
Ankylosauria indet. Osborn 1923 ornithischian
 Crocodylia -
Crocodylia indet. Owen 1842 crocodilian
 Loricata - Pholidosauridae
cf. Pholidosauridae indet. von Zittel and Eastman 1902 crocodilian