Genus: Anomalochelys HIRAYAMA, SAKURAI, CHITOKU, KAWAKAMI & KITO, 2002
Etymology: Latin, anomalo, "anomaly" and Greek, chelys, "turtle."
= Genus: Nova HIRAYAMA & SKURAI, 2001

Species: angulata HIRAYAMA, SAKURAI, CHITOKU, KAWAKAMI & KITO, 2002
Etymology: Latin, angulata, "angulate"; in respect ot nuchal bone with lateal ‘horns’.

Holotyep: HMG 1056

Locality: Tosano-sawa River, Tomiuchi District, Hobetsu-cho, Hokkaido Prefecture, Hokkaido Island, Japan.

Horizon: Yezo Supergroup.

Biostratigraphy:

Age: Late Cretaceous.

Material: large part of carapace with partial plastron attached.