Catawba Collection 9 (Ordovician of the United States)

Where: Virginia (37.4° N, 80.9° W: paleocoordinates 29.7° S, 61.1° W)

• coordinate based on unpublished field data

• hand sample-level geographic resolution

When: Martinsburg Formation, Mohawkian (457.3 - 451.0 Ma)

• Holland and Patzkowsky, 1996 have the "Martinsburg" here as the "Reedsville"

•Based on Kreisa (1980, VA Tech Ph.D. dissertation), probably Trenton equivalent

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, gray, silty, calcareous shale and siltstone

• Poorly exposed; calcareous, light olive gray silty shale, siltstone, and some sandstone, thin to very thin bedded

Size classes: macrofossils, mesofossils

Primary reference: K. M. Layou. 2009. Ecological restructuring after extinction: the Late Ordovician (Mohawkian) of the eastern United States. Palaios 24:118-128 [K. Layou/K. Layou]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 85581: authorized by Karen Layou, entered by Karen Layou on 12.01.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• Dalmanella community
Crinoidea
  -
Crinoidea ("group 1") indet. Miller 1821 Sea lily
Bivalvia
 Modiomorphida - Modiomorphidae
Modiolopsis modiolaris Conrad 1838 clam
 Cardiidia - Grammysiidae
Cuneamya sp. Hall and Whitfield 1875 clam
Bryozoa
  -
Bryozoa indet. bryozoan
"encrusting"
Stenolaemata
  -
Craniata
 Craniopsida - Craniopsidae
Craniops sp. Hall 1859
Rhynchonellata
 Orthida - Dalmanellidae
Dalmanella bassleri Foerste 1909
Strophomenata
 Strophomenida - Rafinesquinidae
Lingulata
 Lingulida - Lingulidae
Lingula sp. BruguiƩre 1797