Genus: Austrocheirus EZCURRA, AGNOLIN & NOVAS, 2010
Etymology: Greek, austros, "southern," and Greek, cheirus, "hand, manus"; in allusion to the non-atrophied anus of this taxon which constitutes the first example of a medium-sized Cretaceous abelisauroid wiht this condition.

Species: isasii EZCURRA, AGNOLIN & NOVAS, 2010
Etymology: In honor of Mr. Marcelo Issai, for his outstanding work in the last 25 years as a technician in palaeontology and discoverer of the holotype type specimen of Austrocheirus.

Holotype: MPM-PV 10003

Locality: Hoyada Arroyo Seco Locality, 49°57'17"S, 72°05'31"W, close to the western coast of the Leona River and four kilometers south of the De los Hornos Hill, southwest Santa Cruz Province, Patagonia, Argentina.

Horizon: Pari Aike Formation.

Biostratigraphy:

Age: Lower Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Eopch, Late Cretaceous.

Material: Several incomplete mid-caudal vertebrae, left metacarpal III, proximal left manual phalanx of digit III, distal end of left tibia, fragmentary left tibia, fragmentary left metatarsal III and some fragments of pedal phalanges.

Referred material:

Number: Not given: Match one another of perfectly in size.