Catawba Collection 18 (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• coordinate based on unpublished field data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)

• 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 85589: authorized by Karen Layou, entered by Karen Layou on 12.01.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• Sowerbyella community
Show authors, comments, and common names
Deuteropoda
  -
Ostracoda indet.
Ostracoda indet. Latreille 1802 ostracod
Trilobita
 Asaphida - Asaphidae
Isotelus sp.
Isotelus sp. Dekay 1824 trilobite
 Phacopida - Pterygometopidae
Calyptaulax sp.
Calyptaulax sp. Cooper 1930 trilobite
Stenolaemata
  -
Stenolaemata indet.
 Trepostomida - Monticuliporidae
Prasopora sp.
Prasopora sp. Nicholson and Etheridge 1877
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites sp.
Tentaculites sp. von Schlotheim 1820
Rhynchonellata
 Atrypida - Anazygidae
Zygospira lebanonensis
 Orthida - Dalmanellidae
Dalmanella bassleri
Dalmanella bassleri Foerste 1909
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina alternata
 Strophomenida - Sowerbyellidae
Sowerbyella rugosa