Barnsboro "greensand" (Navesink) (Cretaceous of the United States)

Also known as Barnesboro

Where: Gloucester County, New Jersey (39.8° N, 75.2° W: paleocoordinates 40.2° N, 50.3° W)

• coordinate estimated from map

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

• At this locality, the most likely source of the specimen is the Maastrichtian Navesink Formation (thanks to Neil Landman for helping with this assessment). (Gaffney et al. 2006, p. 80)

•...examination of the type skull of Bothremys cooki, AMNH 2521, has shown glauconite grains and glauconitic clay remaining as matrix, consistent with either Hornerstown or Navesink Formations. However, the bone of the specimen is dark brown, not the greenish-gray of typical Hornerstown bone. Furthermore, Gallagher (1993) suggested that the bone-producing horizon at Barnsboro was in the Navesink. At present, it seems likely that the type of Bothremys cooki is Maastrichtian rather than Paleocene (Gaffney et al. 2006, p. 83)

Environment/lithology: marginal marine; glauconitic sandstone

• Near-shore marine (Gaffney et al. 2006)
• greensand

Size class: macrofossils

Primary reference: E. D. Cope. 1869. [Remarks on Eschrichtius polyporus, Hypsibema crassicauda, Hadrosaurus tripos, and Polydectes biturgidus]. Proceedings of the Academy of Natural Sciences of Philadelphia 21:191-192 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 81999: authorized by Mark Uhen, entered by Mark Uhen on 20.07.2008, edited by Roger Benson, Jonathan Tennant and Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Belemnitida - Belemnitellidae
Reptilia
 Testudines -
"Osteopygis repandus n. sp." = Catapleura repanda3
"Osteopygis repandus n. sp." = Catapleura repanda3 Cope 1868 sea turtle
AMNH 2353, holotype fragmentary shell
 Testudines - Macrobaenidae
"Osteopygis emarginatus" = Osteopygis emarginatus3, "Osteopygis gibbi n. sp." = Osteopygis emarginatus3
"Osteopygis emarginatus" = Osteopygis emarginatus3 Cope 1868 turtle
AMNH 1485
"Osteopygis gibbi n. sp." = Osteopygis emarginatus3 Cope 1868 turtle
YPM 783, holotype shell
 Testudines - Pancheloniidae
"Lytoloma wielandi n. sp." = Euclastes wielandi3
"Lytoloma wielandi n. sp." = Euclastes wielandi3 Hay 1908 turtle
YPM
 Testudines - Bothremydidae
"Bothremys cookii n. sp." = Bothremys cooki4, Taphrosphys nodosus2
"Bothremys cookii n. sp." = Bothremys cooki4 Leidy 1865 sideneck turtle
AMNH 2521 (originally Rutgers University 1.KV-6 141, 142) the greater portion of a skull, together with the lower jaw. Of the former the occipital region, the auditory passages, the zygomatic arches, and. some other minor parts are lost; of the latter the condyloid. portions are destroyed
Taphrosphys nodosus2 Cope 1870 sideneck turtle
AMNH 1410
 Neornithischia - Hadrosauridae
Hadrosaurus minor n. sp. Cope 1869 hadrosaurid
YPM 1660 (1600?)
 Squamata - Mosasauridae
"Mosasaurus maximus" = Mosasaurus hoffmanni1, "Tylosaurus rapax n. sp." = Prognathodon rapax2, "Russellosaurinae indet." = Russellosaurina1
"Mosasaurus maximus" = Mosasaurus hoffmanni1 Mantell 1829 mosasaur
Large tooth, no collection number
"Tylosaurus rapax n. sp." = Prognathodon rapax2 Hay 1902 mosasaur
AMNH 1490
"Russellosaurinae indet." = Russellosaurina1 Bell 1997 mosasaur
Three black dorsal vertebrae