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

• coordinate stated in text

• outcrop-level geographic resolution

When: Merchantville Formation, Late/Upper Santonian to Late/Upper Santonian (85.8 - 70.6 Ma)

• Spoil piles containing dredged sediments from the lower portion of the Merchantville Formation. Glauconitic-rich spoil piles, a lithology highly indicative of the basal Merchantville Formation

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified, glauconitic sandstone

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Monmouth Amateur Paleontologists’ Society (MAPS)

Primary reference: M. Gane, R. Johnson, H. Maisch and J. P. Schein. 2016. Redescription of the rare Late Cretaceous ammonite Chesapeakiceras nodatum, from the Chesapeake and Delaware Canal, USA. Proceedings of the Academy of Natural Sciences of Philadelphia 165:9-13 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 183119: authorized by Matthew Clapham, entered by Matthew Clapham on 03.12.2016

Creative Commons license: CC BY (attribution)