Where: Big Horn County, Montana (45.4° N, 108.1° W: paleocoordinates 44.7° N, 62.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Himes Member (Cloverly Formation), Albian (113.0 - 100.5 Ma)

• upper part of member = Ostrom's Unit VII; 11 ft above Unit VI

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; claystone

Size class: macrofossils

Collected by J. Ostrom in 1964; 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 50696: authorized by Matthew Carrano, entered by Matthew Carrano on 19.05.2005

Creative Commons license: CC BY (attribution)