Patagoniaemys

Patagoniaemys is an extinct genus of stem turtle known from the late Cretaceous (Campanian to Maastrichtian age) of central Patagonia, Argentina. The genus contains two species: the type species, Patagoniaemys gasparinae, named in 2011, and a second species, Patagoniaemys aeschyli, named in 2026. It is a relatively large taxon with an oval-shaped carapace that has a large nuchal notch and many pits and grooves over its surface.

== Discovery == left|thumb|Palaeogeography|Paleogeographic map of Gondwana during the Late Cretaceous, showing the location of the La Colonia and Los Alamitos formations The type specimen of P. gasparinae is known from skull fragments and several postcranial elements, including a nearly complete vertebral column. These fossils were found between the villages of Bajada Moreno and Bajada del Diablo on Buitre Chico Hill in Chubut Province, Argentina. They were recovered from outcrops of the La Colonia Formation. Later, several other nearly complete fossils of Patagoniaemys were discovered, making this genus the most complete meiolaniform turtle from the Cretaceous period known from the Gondwanan supercontinent.