Where: Big Horn County, Wyoming (45.0° N, 108.3° W: paleocoordinates 44.7° N, 58.3° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Little Sheep Mudstone Member (Cloverly Formation), Aptian to Aptian (125.0 - 109.0 Ma)
• 20 feet below unit VI; member = Ostrom's unit V
•
•D'Emic et al. 2019: The overlying Little Sheep Mudstone Member was deposited ca. 124–109 Ma in a time of low sediment supply.
• 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)
Taxonomic list
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