Where: Tazewell County, Virginia (37.2° N, 81.4° W: paleocoordinates 29.6° S, 61.6° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Gratton Limestone Formation, Caradoc (458.4 - 449.5 Ma)
• Ashbyan
• formation-level stratigraphic resolution
Environment/lithology: gray, cherty/siliceous limestone
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 34214: authorized by Steven Holland, entered by Tori Hanson on 21.08.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Stromatoporoidea | |
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Cephalopoda | |
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Gastropoda | |
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Eotomaria sp. Ulrich and Scofield 1897 snail | |
Subulites sp. Emmons 1842 snail | |
Ostracoda | |
Leperditella sp. ostracod | |
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Isochilina sp. Jones 1858 ostracod | |
Tetradium | |
Tetradium sp. Dana 1846 |