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• coordinate based on unpublished field data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, silty, calcareous shale and siltstone
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 85588: authorized by Karen Layou, entered by Karen Layou on 12.01.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Crinoidea | |
Crinoidea ("group 1") indet. Miller 1821 Sea lily | |
Stenolaemata | |
Stenolaemata indet. Borg 1926 | |
Prasopora sp. Nicholson and Etheridge 1877 | |
Rhynchonellata | |
Dalmanella bassleri Foerste 1909 | |
Strophomenata | |
Rafinesquina alternata Conrad 1838 | |
Craniata | |
Craniops sp. Hall 1859 | |
Gastropoda | |
Gastropoda "planispiral" Cuvier 1795 snail | |
Bucania sp. Hall 1847 snail | |
Bivalvia | |
Ischyrodonta sp. Ulrich 1890 clam | |
Ctenodonta pulchella clam | |
Trilobita | |
| |
Isotelus sp. Dekay 1824 trilobite |