Clifton Beach (Paleocene of the United States)

Where: Charles County, Maryland (38.4° N, 77.3° W: paleocoordinates 39.0° N, 58.4° W)

• coordinate estimated from map

When: Aquia Formation, Thanetian (59.2 - 56.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, glauconitic, silty sandstone

Size class: macrofossils

Collection methods: Repository: Maryland Geological Survey or Johns Hopkins University

Primary reference: W. B. Clark. 1895. Contributions to the Eocene fauna of the Middle Atlantic slope. Johns Hopkins University Circulars 15(121):3-6 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 84045: authorized by Mark Uhen, entered by Mark Uhen on 16.09.2008, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Nautilida - Hercoglossidae
Hercoglossa tuomeyi2 Clark and Martin 1901 nautiloid
Chondrichthyes
 Myliobatiformes - Myliobatidae
"Myliobatis dixoni" = Aetomylaeus dixoni3, "Myliobatis copeanus n. sp." = Aetomylaeus dixoni
"Myliobatis dixoni" = Aetomylaeus dixoni3 Agassiz 1843 eagle ray
"Myliobatis copeanus n. sp." = Aetomylaeus dixoni Agassiz 1843 eagle ray
 Lamniformes - Mitsukurinidae
"Odontaspis elegans" = Striatolamia macrota
"Odontaspis elegans" = Striatolamia macrota Agassiz 1838 goblin shark
 Lamniformes - Otodontidae
"Odontaspis macrota" = Otodus macrotus3
"Odontaspis macrota" = Otodus macrotus3 Agassiz 1838 mackerel shark
Reptilia
 Testudines - Pancheloniidae
? Euclastes sp. Cope 1870 turtle
 Crocodylia -
Thecachampsa ? sericodon1 Cope 1867 crocodilian
Thecachampsa marylandica n. sp. Clark 1895 crocodilian
Actinopteri
 Scombriformes - Scombridae
Cybium sp.3 Cuvier 1829
 Istiophoriformes - Xiphiidae
"Ischyrhiza ? radiata" = Xiphias radiata
"Ischyrhiza ? radiata" = Xiphias radiata Clark 1895 sword fish