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• coordinate based on unpublished field data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; poorly lithified, bioturbated, gray, silty, calcareous shale and lithified, shelly/skeletal, argillaceous, calcareous packstone
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 76083: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 12.11.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
Cryptolithus sp. Green 1832 trilobite | |
Isotelus sp. Dekay 1824 trilobite | |
Strophomenata | |
Rafinesquina alternata Conrad 1838 | |
Rhynchonellata | |
Dalmanella bassleri Foerste 1909 | |
Stenolaemata | |
Stenolaemata indet. Borg 1926 | |
Prasopora sp. Nicholson and Etheridge 1877 | |
Bivalvia | |
Modiolopsis "sp. 2" Hall 1847 clam "Quite small", "distinguished by nearly concentric ornamentation which intersects growth lines at an oblique angle." P.M. Novack-Gottshall thinks description indicates Modiolopsis concentrica.
Modiolopsis modiolaris Conrad 1838 clam | |
Palaeoneilo sp. Hall and Whitfield 1869 clam | |
Gastropoda | |
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