Where: Augusta County, Virginia (38.3° N, 79.1° W: paleocoordinates 29.9° S, 59.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Trentonian (457.3 - 449.6 Ma)

• "of Trenton age, possibly the same as that of the Denmark member of the Sherman Hall formation"

Environment/lithology: limestone

Size class: macrofossils

Preservation: replaced with silica

Collected by G. A. Cooper; reposited in the USNM

Collection methods: quarrying, chemical, hydroflouric,

• "etched in a five per cent solution of hydrochloric acid"

Primary reference: H. B. Whittington. 1941. Silicified Trenton trilobites. Journal of Paleontology 15(5):492-522 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 81308: authorized by John Alroy, entered by John Alroy on 18.06.2008, edited by Melanie Hopkins

Creative Commons license: CC BY (attribution)