Where: Calvert County, Maryland (38.6° N, 76.5° W: paleocoordinates 38.9° N, 72.6° W)
• coordinate estimated from map
When: Plum Point Member (Calvert Formation), Burdigalian (20.4 - 16.0 Ma)
• Strontium dating indicates the age of bed 10 to be 16.2–15.8 Ma, or possibly somewhat older (16.4 Ma) [48, 49]. (Marx & Fordyce, 2015)
• bed-level stratigraphic resolution
Environment/lithology: estuary or bay; sandy claystone
Size class: macrofossils
Preservation: original phosphate
Primary reference: M. D. Uhen. 2007. USNM Chesapeake Group Cetacean Collection Data. [M. Uhen/M. Uhen]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 71796: authorized by Mark Uhen, entered by Mark Uhen on 10.05.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
"Taphrosphys miocenica n. sp." = Bairdemys miocenica
"Taphrosphys miocenica n. sp." = Bairdemys miocenica Collins and Lynn 1936 sideneck turtle | |
Mammalia | |
Physeteridae indet. Gray 1821 sperm whale | |
Parietobalaena palmeri Kellogg 1924 whale |