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• coordinate based on unpublished field data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
•
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 85601: authorized by Karen Layou, entered by Karen Layou on 12.01.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Trilobita | |
| |
Isotelus sp. Dekay 1824 trilobite | |
Cryptolithus sp. Green 1832 trilobite | |
Stenolaemata | |
Prasopora sp. Nicholson and Etheridge 1877 | |
Craniata | |
Craniops sp. Hall 1859 | |
Rhynchonellata | |
Dalmanella bassleri Foerste 1909 | |
Strophomenata | |
Rafinesquina alternata Conrad 1838 | |
Sowerbyella rugosa Meek 1873 | |
Gastropoda | |
Gastropoda "planispiral" Cuvier 1795 snail | |
Plectonotus sp. Clarke 1899 snail | |
Bucania sp. Hall 1847 snail | |
Cephalopoda | |
Cephalopoda "group 1" Cuvier 1797
Cephalopoda ("group 2") indet. Cuvier 1797 | |
Bivalvia | |
Ctenodonta pulchella clam | |
Cyrtodonta sp. Billings 1858 clam | |
Modiolopsis "sp. 1" Hall 1847 clam |