FIGURE 9. Key apomorphic characters of Austrocheirus isasii. Metacarpal III of Dilophosaurus wetherilli (A), Ceratosaurus nasicornis (B), and Austrocheirus isasii (C). Distal tibia of Dilophosaurus wehterilli (D), Velocisaurus uniqus (E), Austrocheirus isasii (F), and Majungasaurus (G). Character 104 (1): poor development of the metacarpal III flexor fossa, Character 106 (1): metacarpal III with dorsal margin of the distal articular condyles protruded directly above the collateral ligament pits. Character 107 (1): asymmetric distal condyles of metacarpal III. Character 115 (1): tibia with the scar of the ascending process of the astragalus bearing a vertical ridge. Character 116 (1) distal end of the tibia with a vertical astragalar facet. Not to scale. (A based on UCMP 37302; B based on USNM 4735; C and F based on MPM-PV 10003; D based on UCMP 77270; E based on MUCPv 41; G based on Carrano 2007).

Published as part of Ezcurra, Martín D., Agnolin, Federico L. & Novas, Fernando E., 2010, An abelisauroid dinosaur with a non-atrophied manus from the Late Cretaceous Pari Aike Formation of southern Patagonia, pp. 1-25 in Zootaxa 2450 on page 15, DOI: 10.5281/zenodo.204710