Hellen Creek, Zone 19 (Miocene of the United States)
Where: Calvert County, Maryland (38.4° N, 76.5° W: paleocoordinates 38.5° N, 73.6° W)
• coordinate estimated from map
When: Boston Cliffs Member (Choptank Formation), Serravallian (13.8 - 11.6 Ma)
Environment/lithology: marine; fine-grained, argillaceous, silty sandstone
• sand; silty, clayey, fine, very shelly. Abundant mollusks, aragonitic taxa very rotten.
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: general faunal/floral analysis
PaleoDB collection 71638: authorized by Mark Uhen, entered by Mark Uhen on 02.05.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
Bivalvia | |
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens Ward and Blackwlder 1975 scallop | |
Dallarca elevata clam | |
Marvacrassatella marylandica Conrad 1832 clam | |
Mercenaria cuneata Conrad 1869 quahog |