Where: Alaska (64.8° N, 141.1° W: paleocoordinates 4.7° N, 68.7° W)

When: Hillard Formation, Solvan (510.2 - 504.5 Ma)

• Unnamed in Cooper, but the limestone of this age has subsequently been named the Hillard Limestone. It probably will be broken up into further formations in the future.

• formation-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, hydrochloric

Primary reference: G. A. Cooper. 1936. New Cambrian brachiopods from Alaska. Journal of Paleontology 10:210-214 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 219912: authorized by Pete Wagner, entered by Pete Wagner on 26.04.2021

Creative Commons license: CC BY (attribution)