Railroad Bridge spoils (Cretaceous of the United States)

Where: Delaware (39.5° N, 75.7° W: paleocoordinates 38.9° N, 45.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Campanian (83.6 - 72.1 Ma)

• spoil piles are a mix of the Merchantville and Marshalltown Formations

Environment/lithology: marine; lithified, concretionary, glauconitic, silty, sandy sandstone

• Merchantville Fm: quartz sand, silt and clay with glauconite. Fossils occurs in concretions. Marshalltown Fm: similar to the Merchantville Fm, but the Marshalltown is composed of different percentages.

Size class: macrofossils

Primary reference: R. M. Feldmann, C. E. Schweitzer, L. M. Baltzly, O. A. Bennett, A. R. Jones, F. F. Mathias, K. L. Weaver and S. L. Yost. 2013. New and previously known decapod crustaceans from the Late Cretaceous of New Jersey and Delaware, USA. Bulletin of the Mizunami Fossil Museum 39:7-37 [C. Schweitzer/L. Baltzly/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 164900: authorized by Carrie Schweitzer, entered by Carrie Schweitzer on 30.12.2014, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Malacostraca
 Decapoda - Nephropidae
Hoploparia gabbi, Hoploparia gladiator
Hoploparia gabbi Pilsbry 1901 clawed lobster
Hoploparia gladiator Pilsbry 1901 clawed lobster
 Decapoda -
Mesostylus mortoni
Mesostylus mortoni Pilsbry 1901 decapod
 Decapoda - Necrocarcinidae
Necrocarcinus rathbunae
Necrocarcinus rathbunae Roberts 1962 crab
 Decapoda - Homolidae
Latheticocarcinus atlanticus