Catawba Collection 23 (Ordovician of the United States)

Where: Virginia (37.4° N, 80.9° W)

• Paleocoordinates: 20.0° S, 112.4° W (Wright 2013)

• coordinate based on unpublished field data

• hand sample-level geographic resolution

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

• 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, calcareous shale and lithified, shelly/skeletal, gray, argillaceous packstone

• Medium gray calcareous shale and medium dark gray argillaceous limestone, laminated to think bedded; thin skeletal packstones and wackestones in upper 300 feet, increasing in thickness and abundance upward

•

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 85594: authorized by Karen Layou, entered by Karen Layou on 12.01.2009

Creative Commons license: CC0 (CC0)

Taxonomic list

• Craniops-Dalmanella-Clams community
Show authors, comments, and common names
Trilobita
 Asaphida - Asaphidae
Isotelus sp.
Isotelus sp. Dekay 1824 trilobite
Rhynchonellata
 Orthida - Dalmanellidae
Dalmanella bassleri
Dalmanella bassleri Foerste 1909
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina alternata
 Strophomenida - Sowerbyellidae
Sowerbyella rugosa