Genus: Orkoraptor NOVAS, EZCURRA & LECUONA, 2008
Etymology: Orr-Korr ("Toothed River"), name applied by Aoniken Patagonia native people to the La Leona River, which runs not far from the fossil site, and Latin, raptor, "theif'."

Species: burkei NOVAS, EZCURRA & LECUONA, 2008
Etymology: In honor of Coleman Burke, an American amateur geologist and paleontologist, who loves Patagonia and kindly supported our explorations in Argentina.

Holotype: MPM-Pv 3457

Locality: Los Hornos Hill, southern coast of Viedma Lake, 49°50'44.2"S, 72°6'21.9"N, Southwest Santa Cruz Provine, Argentina.

Horizon: Pari Aike Formation.

Biostratigraphy:

Age: Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Right postorbital, right quadratojugal, probable coronoid of the right side, 8 isolated teeth, atlantal intercentrum and its right neurapophysis, 2 proximal caudal vertebrae, proximal half of right tibia, 8 fragmentary ribs, and 3 incomplete cheverons.

Referred material:

MPM-Pv 3458: 3 well-preserved shed teeth.