West Jersey Marl Company's Pit, Barnsboro (Navesink): Maastrichtian, New Jersey
collected by J. C. Voorhees 1865

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Testudines
1 specimen
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
see common names

Geography
Country:United States State/province:New Jersey County:Gloucester
Coordinates: 39.8° North, 75.2° West (view map)
Paleocoordinates:41.2° North, 37.9° West (Wright 2013)
Basis of coordinate:estimated from map
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Maastrichtian 10 m.y. bin: Cretaceous 8
Key time interval: Maastrichtian
Age range of interval: 72.1 - 66 m.y. ago
Stratigraphy
Geological group:Monmouth Formation:Navesink
Stratigraphic resolution:bed
Stratigraphy comments: 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)
Lithology and environment
Primary lithology:glauconitic sandstone
Includes fossils?Y
Lithology description: greensand
Environment:marginal marine indet.
Geology comments: Near-shore marine (Gaffney et al. 2006)
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:selective quarrying,surface (in situ),field collection
Reason for describing collection:general faunal/floral analysis
Collectors:J. C. Voorhees Collection dates:1865
Metadata
Also known as:Barnesboro
Database number:81999
Authorizer:M. Uhen, M. Carrano Enterer:M. Uhen, M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2008-07-20 11:08:47 Last modified:2025-02-22 15:12:02
Access level:the public Released:2008-07-20 11:08:47
Creative Commons license:CC0
Reference information

Primary reference:
14123.ETE J. Leidy. 1865. Cretaceous reptiles of the United States. Smithsonian Contributions to Knowledge 192:1-135 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

27976 E. S. Gaffney, H. Tong, and P. A. Meylan. 2006. Evolution of the side-necked turtles: The families Bothremydidae, Euraxemydidae, and Araripemydidae. Bulletin of the American Museum of Natural History 300:1-318 [M. Uhen/M. Uhen/M. Uhen]