AGr-12: Early/Lower Campanian, Alabama

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Testudines - Ctenochelyidae
Ctenochelys acris Zangerl 1953
1 specimen
see common names

Geography
Country:United States State/province:Alabama County:Greene
Coordinates: 32.8° North, 88.0° West (view map)
Paleocoordinates:35.5° North, 60.0° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Early/Lower Campanian
Age range of interval:83.50000 - 70.60000 m.y. ago
Stratigraphy
Formation:Mooreville Chalk
Stratigraphic resolution:formation
Stratigraphy comments: "The formation is diachronous, with surface exposures ranging in age from latest Santonian in the central portion of the state, to early Campanian at the western edge of Alabama (Mancini et al. 1995). Isotopic analysis (Liu 2009) and nanofossils (Raymond et al. 1988) from the Mooreville Chalk of Greene County indicate a Campanian age for these deposits of between 82 and 83.5 Ma."
Lithology and environment
Primary lithology:concretionary,pyritic claystone
Lithology description: compact bluish grey clay belonging to the upper portion of the Mooreville Chalk
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:181624
Authorizer:P. Holroyd Enterer:P. Holroyd
Modifier:P. Holroyd Research group:vertebrate
Created:2016-09-24 02:05:20 Last modified:2016-09-24 02:11:04
Access level:the public Released:2016-09-24 02:05:20
Creative Commons license:CC BY
Reference information

Primary reference:

60410. A. D. Gentry. 2017. New material of the Late Cretaceous marine turtle Ctenochelys acris Zangerl, 1953 and a phylogenetic reassessment of the ‘toxochelyid’-grade taxa. Journal of Systematic Palaeontology 15(8):675-696 [P. Holroyd/P. Holroyd/P. Mannion]