Where: Big Horn County, Wyoming (45.0° N, 108.3° W: paleocoordinates 44.5° N, 60.1° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• 20 feet below unit VI; member = Ostrom's unit V

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; claystone

Size class: macrofossils

Collected by J. H. Ostrom in 1962; reposited in the YPM

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 50355: authorized by Matthew Carrano, entered by Matthew Carrano on 13.05.2005

Creative Commons license: CC BY (attribution)