抄録
A partial skeleton of Mesodermochelys undulatus Hirayama and Chitoku, 1996 (Testudines: Chelonioidea: Dermochelyidae), with carapace estimated as 1.3m long, was collected from the Late Cretaceous (early Late Campanian) Izumi Group at Shionoe, Takamatsu City, Kagawa Prefecture, Western Japan. This occurrence supports the presence of highly localized sea turtle fauna dominated by Mesodermochelys in the sea adjacent to Japan during the Late Cretaceous.
