Onslow Beach (Oligocene of the United States)

Where: Onslow County, North Carolina (34.6° N, 77.3° W: paleocoordinates 34.6° N, 71.7° W)

• coordinate estimated from map

When: Belgrade Formation, Chattian (28.1 - 23.0 Ma)

• Some references identify this unit as the Silverdale Formation, which may be equivalent to the Chattian Belgrade Formation. Some references suggest this is the River Bend Formation as well.

Environment/lithology: limestone

Size classes: macrofossils, mesofossils

Preservation: original phosphate

Reposited in the USNM

Collection methods: surface (float),

Primary reference: D. P. Domning. 1997. Fossil Sirenia of the West Atlantic and Caribbean Region. VI. Crenatosiren olseni (Reinhart, 1976). Journal of Vertebrate Paleontology 17(2):397-412 [M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 54075: authorized by Mark Uhen, entered by Mark Uhen on 22.09.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

 Sirenia - Dugongidae
cf. Crenatosiren olseni Reinhart 1976 dugong
 Cetacea -
Odontoceti indet.2 Flower 1867 toothed whale
 Cetacea - Xenorophidae
Xenorophidae indet.1 Uhen 2008 toothed whale
USNM 534010
Albertocetus meffordorum n. gen. n. sp.3 Uhen 2008 toothed whale