Genus: Zangerlchelys HIRAYAMA, 2006
Etymology: In honor of Rainer Zangerl, an authority on fossil sea turtles, and Greek, chelys, "turtle."

Species: arkansaw (SCHMIDT, 1944) HIRAYAMA, 2006
Etymology: In reference to Arksansas, where the specimen was found.
= Catapleura arkansaw SCHMIDT, 1944

Holotype: FM P27045

Locality: Gather Brothers farm, 1 mile northeast of Okolona, NE 1/4, sec. 29, T 73S, R 20W, Clark County, Arkansas.

Horizon: Marlbrook Marl, Gulf Series.

Biostratigraphy:

Age: Late Cretaceous.

Material: A nearly complete carapace and plastron.