Where: Howard County, Arkansas (33.8° N, 93.9° W: paleocoordinates 37.9° N, 65.6° W)

• coordinate based on nearby landmark

When: Marlbrook Marl Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; marl

Size class: macrofossils

Primary reference: R. Zangerl. 1953. The vertebrate fauna of the Selma Formation of Alabama. Part IV. The turtles of the family Toxochelyidae. Fieldiana: Geology Memoirs 3(4):145-277 [J. Alroy/M. Sommers/P. Mannion]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 82004: authorized by Mark Uhen, entered by Mark Uhen on 20.07.2008

Creative Commons license: CC BY (attribution)