AGr-42 (Cretaceous of the United States)

Where: Greene County, Alabama (32.9° N, 88.0° W: paleocoordinates 35.6° N, 60.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Mooreville Chalk Formation, Early/Lower Campanian (83.5 - 70.6 Ma)

• "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."

• formation-level stratigraphic resolution

Environment/lithology: marine; concretionary, pyritic claystone

• compact bluish grey clay belonging to the upper portion of the Mooreville


Size class: macrofossils

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 181623: authorized by Patricia Holroyd, entered by Patricia Holroyd on 24.09.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

 Testudines - Pancheloniidae
Ctenochelys acris Zangerl 1953 turtle