Where: St Marys County, Maryland (38.2° N, 76.5° W)
• Paleocoordinates: 39.2° N, 72.8° W (Wright 2013)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Windmill Point Member (St Marys Formation), Late/Upper Miocene (11.6 - 5.3 Ma)
• Unit B in Ward 1992 (Fig. 16), ~2.0 m of sand. Collection from Windmill Point of St Marys Fm, above the Little Cove Point Mbr of St Marys Fm, and underlies covered interval.
• bed-level stratigraphic resolution
Environment/lithology: coastal; unlithified, burrowed, fine-grained, concretionary, glauconitic, shelly/skeletal, conglomeratic sandstone
Size class: macrofossils
Reposited in the USNM
• Most material appears to be reposited in USNM and USGS collections
Primary reference: L. W. Ward. 1992. Molluscan biostratigraphy of the Miocene Middle Atlantic Coastal Plain of North America. Virginia Museum of Natural History 2 [A. Miller/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 59303: authorized by Austin Hendy, entered by Austin Hendy on 25.03.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Gastropoda | |
"Turritella plebeia" = Mariacolpus plebeia, Turritella subvariabilis
| |
Nassarius (Triatiaria) peralta Conrad 1868 snail
Bulliopsis marylandica Conrad 1862 snail
Bulliopsis quadrata Conrad 1830 snail | |
Busycon fusiforme whelk | |
Buccinofusus parilis Conrad 1832 snail | |
"Terebra simplex" = Laevihastula simplex
"Terebra simplex" = Laevihastula simplex Conrad 1830 auger snail | |
Conus deluvianus Green 1830 cone shell | |
Urosalpinx subrusticus d'Orbigny 1852 murex snail | |
Bivalvia | |
Astarte perplana Conrad 1840 clam | |
Florimetis biplicata Conrad 1834 tellin clam | |
| |
Leptomactra delumbis Conrad 1832 clam
Mactrodesma subponderosa d'Orbigny 1852 clam | |
"Lirophora alveata" = Lirophora (Lirophora) alveata, Dosinia acetabulum, Mercenaria tetrica, "Clementia inoceriformis" = Clementia (Clementia) inoceriformis
"Lirophora alveata" = Lirophora (Lirophora) alveata Conrad 1831 venus clam
Mercenaria tetrica Conrad 1838 quahog
"Clementia inoceriformis" = Clementia (Clementia) inoceriformis Wagner 1839 venus clam | |
Glossus santamaria Ward 1992 clam | |
Panopea goldfussii Wagner 1839 clam | |
Stewartia anodonta Say 1824 clam | |
Crassostrea sp. Sacco 1897 oyster | |
Chesapecten santamaria Tucker 1934 scallop | |
Dallarca idonea, "Rasia andrewsi" = Anadara (Rasia) andrewsi
Dallarca idonea Conrad 1832 clam
"Rasia andrewsi" = Anadara (Rasia) andrewsi Ward 1992 ark |