Where: Calvert County, Maryland (38.7° N, 76.5° W: paleocoordinates 38.9° N, 73.7° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Calvert Beach Member (Calvert Formation), Serravallian (13.8 - 11.6 Ma)
• Zones 14-16A are regarded as Serravallian in age.
• bed-level stratigraphic resolution
Environment/lithology: coastal; shelly/skeletal, silty sandstone
Size class: macrofossils
Preservation: original phosphate
Reposited in the USNM
Collection methods: surface (float),
• collected from a block of sediment apparently fallen from the cliff from Zone 10
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: taxonomic analysis
PaleoDB collection 71648: authorized by Mark Uhen, entered by Mark Uhen on 02.05.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Pseudophorus calvertensis n. sp.
| |
| |
Bivalvia | |
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens Ward and Blackwlder 1975 scallop | |
Glossus marylandica Schoonover 1941 clam | |
Lirophora parkeria Glenn 1904 venus clam | |
Lucinoma contracta Say 1824 clam | |
Astarte sp. Sowerby 1816 clam |