Northwestern Improvement Company No. 4 Mine (Eocene of the United States)

Also known as Roslyn

Where: Kittitas County, Washington (47.3° N, 121.1° W: paleocoordinates 47.6° N, 108.8° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Duchesnean zone, Roslyn Formation, Late/Upper Eocene (37.2 - 33.9 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; sandstone

• the turtle was collected from the Roslyn sandstone

Size class: macrofossils

Reposited in the USNM

Collection methods: quarrying,

• "The preservation of the fine specimen is due to the intelligent interest of Mr. P. Y. Heckman, of Eoslyn, from whom it was obtained for the U. S. ISTational Museum. The Museum is indebted to Dr. F. H. Knowlton for his friendly offices in securing this species."

Primary reference: O. P. Hay. 1899. Descriptions of two new species of tortoise from the Tertiary of the United States. Proceedings of the US National Museum 22(1181):21-24 [M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185720: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 10.05.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Testudines - Panemydidae
Acherontemys heckmani n. gen. n. sp.
Acherontemys heckmani n. gen. n. sp. Hay 1899 turtle