Camp Roosevelt, Zone 10 (Miocene of the United States)

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

• sparse molluscs, low in diversity; subtropical environment in embayment and dry onshore; area not far from shore, bay, short-term eustatic transgression events, long-term regression trend

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

Mammalia
 Cetacea -
Parietobalaena palmeri Kellogg 1924 whale
 Cetacea - Physeteridae
Physeteridae indet. Gray 1821 sperm whale
Reptilia
 Testudines - Podocnemididae
"Taphrosphys miocenica n. sp." = Bairdemys miocenica
"Taphrosphys miocenica n. sp." = Bairdemys miocenica Collins and Lynn 1936 sideneck turtle