04-MTOR-B (Ordovician of the United States)

Where: Brown County, Ohio (39.0° N, 83.8° W: paleocoordinates 26.0° S, 57.7° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Oregonia Formation, Richmondian (449.6 - 445.5 Ma)

• C4 sequence

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, bioturbated, phosphatic, shelly/skeletal, gray packstone and lithified, gray mudstone

Preservation: mold/impression, original calcite, replaced with calcite

Primary reference: S. M. Holland and M.E. Patzkowsky. 2007. Gradient ecology of a biotic invasion: biofacies of the type Cincinnatian Series (Upper Ordovician), Cincinnati, Ohio region, USA. Palaios 22:408-423 [S. Holland/S. Holland]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 73121: authorized by Steven Holland, entered by Steven Holland on 04.06.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Crinoidea
 Monobathrida - Glyptocrinidae
Glyptocrinus sp. Hall 1847 Sea lily
Strophomenata
 Strophomenida - Rafinesquinidae
Rhynchonellata
 Atrypida - Anazygidae
 Orthida - Plectorthidae
 Orthida - Platystrophiidae
Stenolaemata
 Trepostomata -
Trepostomata indet. Ulrich 1882
bifoliate
Trepostomata indet. Ulrich 1882
ramose
Gymnolaemata
 Ctenostomata - Ropalonariidae
Ropalonaria sp. Ulrich 1879
Gastropoda
 Euomphalina - Platyceratidae
Cyclonema sp. Hall 1852 snail
Bivalvia
 Myalinida - Ambonychiidae
Ambonychia sp. Hall 1847 clam
Trilobita
 Phacopida - Calymenidae
Flexicalymene sp. Shirley 1936 trilobite