ammonites
Loc. 3. south side of road, 0.2 mile east of Strasburg Junction (Ordovician of the United States)

Also known as 1000 feet east of Strasburg Junction; Echinosphaerites bed

Where: Shenandoah County, Virginia (39.0° N, 78.3° W: paleocoordinates 29.7° S, 58.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Botetourt limestone Member (Edinburg Formation), Blackriveran (460.9 - 449.5 Ma)

• peltifer conodont zone; Echinosphaerites bed

• bed-level stratigraphic resolution

Environment/lithology: limestone

• Alterations of dark granular limestone and dark fine-grained limestone with spponge spicules

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Primary reference: H. B. Whittington and W.R., I.I. Evitt. 1953. Silicified Middled Ordovician trilobites. Geological Society of America Memoir 59:1-139 [P. Wagner/P. Wagner] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 73342: authorized by Pete Wagner, entered by Pete Wagner on 12.06.2007, edited by Melanie Hopkins