Marl pit near Swedesboro (Cretaceous to of the United States)

Where: Gloucester County, New Jersey (39.7° N, 75.3° W: paleocoordinates 39.1° N, 45.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Marshalltown Formation (Matawan Group), Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; marl

Size class: macrofossils

Collected by O. C. Marsh; reposited in the YPM

Primary reference: E. D. Cope. 1868. On some Cretaceous Reptilia. Proceedings of the Academy of Natural Sciences of Philadelphia 20:233-242 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 109662: authorized by Matthew Carrano, entered by Hallie Street on 20.05.2011, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

 Squamata - Mosasauridae
Clidastes iguanavus n. sp. Cope 1868 mosasaur
YPM 1601; dorsal vertebra
 Sauropterygia -
Elasmosaurus orientalis n. sp. Cope 1869 plesiosaur
AMNH 1409