AMNH 03-30, Horse Coulée (Jurassic to of the United States)

Also known as Horse Coulee, Beauvais Creek

Where: Big Horn County, Montana (45.5° N, 108.1° W: paleocoordinates 41.2° N, 53.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Morrison Formation, Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)

• "probably Unit III"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; claystone

Size class: macrofossils

Collected by B. Brown in 1903; reposited in the AMNH

Collection methods: quarrying, mechanical,

Primary reference: J. H. Ostrom. 1970. Stratigraphy and paleontology of the Cloverly Formation (Lower Cretaceous) of the Bighorn Basin area, Wyoming and Montana. Peabody Museum Bulletin 35:1-234 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 50714: authorized by Matthew Carrano, entered by Matthew Carrano on 19.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia - Diplodocidae
Diplodocus sp. Marsh 1878 diplodocine
AMNH 5855
 Saurischia - Camarasauridae
Camarasaurus sp. Cope 1877 camarasaurid