Gray farm, Hornerstown (Cretaceous of the United States)

Where: Monmouth County, New Jersey (40.1° N, 74.6° W: paleocoordinates 40.4° N, 50.1° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Mount Laurel Formation (Monmouth Group), Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• bulldozed sediments in spoil pile, but matrix on bone indicates Mount Laurel Fm., not overlying Navesink Fm. From near top of formation.

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; gray, yellow, sandy claystone

• "yellowish-gray sandy clay"

Size classes: macrofossils, mesofossils, microfossils

Collected by G. Case in 1980

Collection methods: salvage,

• Collected by G. Case, deposited in Princeton Museum (presumably now at YPM)

Primary reference: D. Baird. 1984. Evidence of giant protostegid sea-turtles in the Cretaceous of New Jersey. The Mosasaur 2:135-140 [J. Alroy/M. Sommers]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 46617: authorized by Matthew Carrano, entered by Matthew Carrano on 21.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

 Decapoda - Nephropidae
Hoploparia gabbi Pilsbry 1901 clawed lobster
 Decapoda - Callianassidae
Protocallianassa mortoni Rathbun 1935 decapod
 Terebratulida - Terebrataliidae
 Arcida - Cucullaeidae
 Myalinida - Inoceramidae
Inoceramus sp. Sowerby 1814 clam
 Pectinida - Pectinoidae
 Pectinida - Plicatulidae
 Ostreida - Gryphaeidae
"Exogyra costata" = Exogyra (Exogyra) costata Say 1971 oyster
 Carditida - Crassatellidae
"Crassatellites vadosus" = Crassatella vadosa
"Crassatellites vadosus" = Crassatella vadosa Morton 1834 clam
 Pholadida - Pholadidae
Pholas sp. Linnaeus 1758 clam
 Cardiida - Cardiidae
"Pachycardium sp." = Protocardia (Pachycardium)
"Pachycardium sp." = Protocardia (Pachycardium) Conrad 1869 cockle
 Naticoidea - Naticidae
Amaurellina sp. Fischer 1885 moon snail
 Belemnitida - Belemnitellidae
 Ammonitida - Scaphitidae
Scaphites sp. Parkinson 1811 ammonite
 Ammonitida - Baculitidae
Baculites ovatus Say 1820 ammonite
 Sclerorhynchiformes - Sclerorhynchidae
Ischyrhiza mira Leidy 1856 elasmobranch
 Myliobatiformes - Myliobatidae
Brachyrhizodus wichitaensis Romer 1942 eagle ray
 Lamniformes - Anacoracidae
Squalicorax pristodontus Agassiz 1843 crow shark
 Salmoniformes - Enchodontidae
Enchodus ferox Leidy 1855
 Testudines - Protostegidae
Protostegidae indet. Cope 1873 sea turtle
or "a remarkably late survival of Protostega"
 Clavulina - Clionaidae