Governor Run, south, Zone 17 (Miocene of the United States)

Also known as Calvert Beach north, Matoaka Cottages

Where: Calvert County, Maryland (38.5° N, 76.5° 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)

Environment/lithology: shoreface; yellow sandstone

• Mollusk-dense pale yellow-brown to pale orange well-sorted sand; sub-tropical to temperate, in a current-swept channel-like basin, area not far from shore, bay, short-term eustatic transgression events, long-term regression trend
• yellowish sand

Size class: macrofossils

Primary reference: G. B. Shattuck. 1904. Geological and paleontological relations, with a review of earlier investigations. Maryland Geological Survey Miocene Text xxxiii-clv [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 70843: authorized by Mark Uhen, entered by Mark Uhen on 09.04.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Echinoidea
 Clypeasteroida - Abertellidae
Abertella aberti4
Abertella aberti4 Conrad 1842 sand dollar
Mammalia
 Carnivora - Phocidae
"Leptophoca lenis" = Leptophoca proxima2
"Leptophoca lenis" = Leptophoca proxima2 Van Beneden 1876 seal
 Cetacea - Platanistidae
Pomatodelphis inaequalis1, Zarhachis sp.4
Pomatodelphis inaequalis1 Allen 1921 toothed whale
Zarhachis sp.4 Cope 1868 toothed whale
 Cetacea - Cetotheriidae
Cetotherium sp.4
Cetotherium sp.4 Brandt 1843 whale
Chondrichthyes
 Carcharhiniformes - Carcharhinidae
"Galeocerdo triqueter" = Physodon triqueter4
"Galeocerdo triqueter" = Physodon triqueter4 Eastman 1904 requiem shark
Malacostraca
 Decapoda -
Cancroidea indet.3
Cancroidea indet.3 Latreille 1802 crab
1Godfrey and Lambert 2023; 2Koretsky 2001; 3Martin 1904; 4Uhen 2007