Where: Washington County, Virginia (36.8° N, 82.3° W: paleocoordinates 30.6° S, 73.0° W)
• coordinate stated in text
• local area-level geographic resolution
When: Arenigian (478.6 - 468.1 Ma)
• Knox is a Group name. Authors state that the formations in the area are discontinuous outcrops and thus do not feel confident in using more precise nomenclature. AGE: Arenigian; refined from Early Ordivician by A. Hendy (6/2009) on the basis of biostratigraphic data.
• formation-level stratigraphic resolution
Environment/lithology: shallow subtidal; lithified, gray, cherty/siliceous dolomite and limestone
Primary reference: C. S., J.r. Bartlett and H. W. Webb. 1971. Geology of the Bristol and Wallace quadrangles, Virginia. Virginia Division of Mineral Resources Report of Investigations 25:1-93 [J. Alroy/M. Sommers/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 6980: authorized by John Alroy, entered by Mike Sommers on 18.04.2000, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Cephalopoda | |
| |
Campbelloceras sp. Ulrich and Foerste 1936 | |
Gastropoda | |
Murchisonioidea indet. Koken 1896 snail | |
Hormotoma sp. Salter 1859 snail | |
? Lophonema sp. Purdue and Miser 1916 snail | |
Eccyliopterus sp. Remelé 1888 snail
cf. Pararaphistoma sp. Vostokova 1955 snail | |
Lecanospira compacta Salter 1859 snail | |
Trilobita | |
|