South of Camp Conoy Road, Zone 17-18 (Miocene of the United States)

Where: Calvert County, Maryland (38.4° N, 76.4° W: paleocoordinates 38.6° N, 73.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Drumcliff Member (Choptank Formation), Serravallian (13.8 - 11.6 Ma)

• At the contact between Drumcliff member (bed 17) and St. Leonard Member (bed 18)

Environment/lithology: shoreface; sandstone

• Mollusk-dense pale yellow-brown to pale orange well-sorted sand; sub-tropical to temperate, in a current-swept channel-like basin. Overlain by a finer-grained sand and silt of deeper, stiller, possibly inner-bay waters.

Size class: macrofossils

Primary reference: S. D. Dawson. 1996. A new kentriodontid dolphin (Cetacea; Delphinoidea) from the middle Miocene Choptank Formation, Maryland. Journal of Vertebrate Paleontology 16(1):135-140 [J. Alroy/J. Wertheim/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37348: authorized by John Alroy, entered by Jill Wertheim on 12.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Odontoceti -
Macrokentriodon morani n. gen. n. sp.
Macrokentriodon morani n. gen. n. sp. Dawson 1996 toothed whale