J.D. PORFIRI1; P. GANDOSSI2; J.O. CALVO1 and D. DOS SANTOS1
1Centro Paleontológico Lago Barreales (CePaLB). Universidad Nacional del Comahue. Neuquén, Argentina. Solo usuarios registrados se encuentran habilitados a visualizar los enlaces. Gracias por su visita.
2Progetto Argendino. Bergamo, Italy. Solo usuarios registrados se encuentran habilitados a visualizar los enlaces. Gracias por su visita.
The new dinosaur was found at Aguada Pichana locality, around 170 km NW of Neuquén City. The material comes from the Candeleros Formation (Late Cretaceous), Neuquén Group. The specimen (MUCPv 1250) is 70% complete, and includes dentary, premaxilla, maxilla, humerus, ulna, radius, scapular blade, dorsal vertebrae, a complete and articulated pelvis, caudal vertebrae and hemal arches, femur, metatarsals, and pedal phalanges. The specimen was approximately 5 meters long. The Aguada Pichana specimen presents several characteristics shared with other abelisaurids, such as: high and short maxillae, elongated and low ilia, with dorsal margin straight; unguals with bifurcated collateral sulci, and caudal vertebrae with transverse processes with fore and aft projections. The Aguada Pichana form presents a straight dorsal margin of the ilium with an acute notch on the preacetabular blade.
The metatarsals are slender remembering to that of abelisauroids. The humerus is slender and short. In proximal view, the humeral head is less rounded than other abelisaurs such as Carnotaurus Bonaparte, Novas and Coria and Aucasaurus Coria, Chiappe and Dingus remembering to Masiakasaurus Carrano, Sampson and Forster. The ulna and radius represent approximately the 34% length of the humerus. The scapular blade is extremely thin compared with others abelisaurs.
The metatarsals are slender remembering to that of abelisauroids. The humerus is slender and short. In proximal view, the humeral head is less rounded than other abelisaurs such as Carnotaurus Bonaparte, Novas and Coria and Aucasaurus Coria, Chiappe and Dingus remembering to Masiakasaurus Carrano, Sampson and Forster. The ulna and radius represent approximately the 34% length of the humerus. The scapular blade is extremely thin compared with others abelisaurs.
Fuente: Resúmenes de las XXIV Jornadas Argentinas de Paleontología de Vertebrados, San Rafael, Mendoza, Argentina. Mayo, 2009
