Gateway to the Paleobiology Database
Archelon ischyros Wieland 1896 (sea turtle)

Reptilia - Testudines - Protostegidae

PaleoDB taxon number: 128038

Full reference: G. R. Wieland. 1896. Archelon ischyros: a ne gigantic cryptodire testudinate from the Fort Pierre Cretaceous of South Dakota. The American Journal of Science, series 4 2(12):399-412

Belongs to Archelon according to O. P. Hay 1930

Sister taxon: Archelon marshii

Type specimen: Its type locality is south fork, Cheyenne River, which is in a Campanian/Maastrichtian terrestrial horizon in the Pierre Shale Formation of South Dakota