ammonites
Grayson Ridge (UW V-94030) (Paleocene to of the United States)

Where: Carbon County, Wyoming (41.8° N, 107.0° W: paleocoordinates 47.6° N, 86.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: lower Member (Hanna Formation), Torrejonian to Torrejonian (63.3 - 56.8 Ma)

• said to be late Torrejonian to early Tiffanian

Environment/lithology: terrestrial

Reposited in the UW

Primary reference: R. Secord. 1998. Rocky Mountain Geology 33(1):119-154 [J. Alroy/J. Alroy] more details

PaleoDB collection 14848: authorized by John Alroy, entered by John Alroy on 21.09.1998

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)