Nordyke Creek, Bed 19 (Carboniferous of the United States)

Where: Washington County, Virginia (36.7° N, 82.2° W: paleocoordinates 16.2° S, 26.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Pennington Formation, Chesterian (335.5 - 323.2 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, calcareous siltstone and sandstone

• siltstone, very fine grained, very calcareous, medium bedded sandstone, some beds contain large crinoid stem molds up to 27 mm diamete.

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 7088: authorized by John Alroy, entered by Mike Sommers on 25.04.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• molds, hard to identify.
Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Strophomenata
 Productida - Echinoconchidae
"Diaphragmus aff. elegans" = Echinoconchus elegans
"Diaphragmus aff. elegans" = Echinoconchus elegans Norwood and Pratten 1855