Dinosauria

Saurischia

Theropoda

Ceratosauria

Coelophysoidea

_Coelophysoidae

Coelophysoidae indet. 1

Ceratosauroidea

Genusaurus sisteronis

Abelisauroidea

Berberosaurus liassicus

Noasauridae

Masiakasaurus knopfleri

Abelisauridae

Carnotaurinae

Majungasaurus crenatissimus

Skorpiovenator bustingorryi

Brachyrostra Canale, J. I., Scanferla, C. A., Agnolin, F. L., and Novas, F. E., 2009
(Dinosauria - Theropoda - Abelisauridae - Carnotaurinae)

Etimology. From Latinized Greek word, Brachy , short; and Latin word rostrum , snout.

Phylogenetic definition . Brachyrostra is phylogenetically defined as all the abelisaurids more closely related to Carnotaurus sastrei than to Majungasaurus crenatissimus.

Diagnosis. Brachyrostra can be diagnosed by the following synapomorphies: 1) Ventral margin of the dentary strongly convex, with dentary symphysis directed upwards ; 2) Distal end of jugal process of postorbital craniocaudally expanded ; 3) Transverse processes of proximal and mid-caudal vertebrae with a great distal expansion and a well-developed cranial process ; 4) Anterior caudal vertebrae with hyposphene-hypantrum accesory articulations ; 5) Distal extreme of the cnemial crest hatched-shaped ; and 6) Ascending process of the astragalus subrectangular in shape. Characters 1, 6 are ambiguous synapomorphies (Canale, J. I., Scanferla, C. A., Agnolin, F. L., and Novas, F. E., 2009).