Marcem Quarry, 2 miles west of Gate City (Ordovician of the United States)

Where: Virginia (38.6° N, 82.6° W: paleocoordinates 27.9° S, 61.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lincolnshire Formation, Ashbyan (460.9 - 449.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: black, cherty/siliceous limestone

• Limestone, dense, black, cherty

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Primary reference: G. A. Cooper. 1956. Chazyan and related brachiopods. Smithsonian Miscellaneous Collections 127:1-1245 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 203254: authorized by Pete Wagner, entered by Pete Wagner on 07.08.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Syndielasmatidae
Sowerbyites subnasutus n. sp. Cooper 1956
 Strophomenida - Furcitellidae
Rhynchonellata
 Orthida - Plaesiomyidae
Valcourea sp. Raymond 1911
Dinorthis atavoides Willard 1928
 Orthida - Hesperorthidae
 Orthida - Plectorthidae
Mimella ? laticardinia
Specimens from the Lincolnshire formation at Marcem Quarry west of Gate City have been placed here, although they are larger and with somewhat more inflated pedicle valve than M. laticardinia, but medium-sized specimens from the same place are very close to the Eidson forms.
 Pentamerida - Camerellidae
Stenolaemata
 Cystoporata - Constellariidae