Bowen Formation, Thompson Valley (Ordovician of the United States)

Where: Tazewell County, Virginia (37.0° N, 81.6° W: paleocoordinates 29.6° S, 61.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Bowen Formation, Caradocian (460.9 - 449.5 Ma)

• Blackriveran

• formation-level stratigraphic resolution

Environment/lithology: red mudstone

• Red lumpy mudrocks. Some of the beds are mottled light maroon and apple green. Bedding in the upper 8 to 12 feet is straticulate, and mudcracks are abundant. Desiccation of the sediment soon after its deposition produced hexagonal jointing, causing the mucrock to weather into columns.

Size class: macrofossils

Primary reference: B. N. Cooper and C. E. Prouty. 1943. Stratigraphy of the Lower Middle Ordovician of Tazewell County, Virginia. Bulletin of the Geological Society of America 54:819-886 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 34265: authorized by Steven Holland, entered by Tori Hanson on 25.08.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Tetradium fibratum
  - Florideophyceae
"Tetradium fibratum" = Prismostylus fibratum
"Tetradium fibratum" = Prismostylus fibratum Safford 1856
Safford