Poricy Brook, Middletown (Cretaceous of the United States)

Where: Monmouth County, New Jersey (40.4° N, 74.1° W: paleocoordinates 40.6° N, 49.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Navesink Formation (Monmouth Group), Maastrichtian (72.1 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; medium-grained, coarse, glauconitic, green sandstone and brown, argillaceous marl

• "In its lower portion and especially to the north, the Navesink is predominantly a glauconitic sand, deep dusky green in color. Toward the south and in the upper portion, it is less glauconitic and more clayey with more lignite and quartz granules. Here it assumes a dusky brown color, from which it derives its informal name, the 'chocolate marl'. The contact with the underlying Mount Laurel Formation is generally sharp and disconformable. It is moderately to poorly sorted, medium to coarse grained, with vivianite nodules present in places".

Size class: macrofossils

Collection methods: surface (float),

Primary reference: W. B. Gallagher. 1984. Paleoecology of the Delaware Valley region. Part II: Cretaceous to Quartenary. The Mosasaur 2:9-43 [M. Uhen/M. Shalap/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 167743: authorized by Matthew Carrano, entered by Matthew Carrano on 30.03.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Belemnitida - Belemnitellidae
Belemnitella americana
Bivalvia
 Ostreida - Flemingostreidae
Agerostrea mesenterica
Agerostrea mesenterica Morton 1834 oyster
 Ostreida - Gryphaeidae
Pycnodonte mutabilis, "Exogyra costata" = Exogyra (Exogyra) costata
"Exogyra costata" = Exogyra (Exogyra) costata Say 1820 oyster
 Pectinida - Pectinoidae
Pecten venustus
Rhynchonellata
 Terebratulida - Terebrataliidae
Choristothyris plicata
Reptilia
 Ornithischia - Nodosauridae
Nodosauridae indet.
Nodosauridae indet. Marsh 1890 ankylosaur
PU 21775 (caudal centrum)