INVESTIGADORES
PAULINA CARABAJAL ariana
congresos y reuniones científicas
Título:
PALEONEUROLOGY OF CARNOTAURUSSASTREI(THEROPODA, ABELISAURIDAE): A PRELIMINARY STUDY BASED ON CT SCANS
Autor/es:
CERRONI, M.A.; PAULINA CARABAJAL, A.; NOVAS, F.
Lugar:
Mar Chiquita
Reunión:
Jornada; Jornadas Argentinas de Paleontologia de Vertebrados; 2017
Institución organizadora:
Museo de Ciencias Naturales de Mar Chiquita
Resumen:
xxoniFilippi, Méndez, Juárez Valieri and Garrido from Argentina, Majungasaurus crennatissimusDepéret from Madagascar, and a partial endocast of Indosaurus matleyiHuene and Matley from India. Here, we present the complete cranial endocast of CarnotaurussastreiBonaparte (MACN-CH 894) based on CT scans. Although the most delicate structures of the endocranial cavity are not clearly observed in the data set, the general morphology of the brain, plus some cranial nerves (i.e., CNs II, V, VI and XII) and some blood vessels (i.e., caudal middle cerebral brain and sphenoidal artery) are recognized. The shape and proportions of the endocranial cavity resemble those present in other Cretaceous abelisaurids, including well-marked cerebral hemispheres, robust and elongate olfactory tract and elongate, and slightly divergent olfactory bulbs. However, the olfactory tracts and bulbs of Carnotaurusare curved ventrally (therefore being aligned with the cerebral hemispheres), unlike the horizontally oriented structures described for other abelisaurids so far. Carnotaurusshares with the South American forms the presence of a low dorsal expansion (or pyramidal peak) and the angle between midbrain and hindbrain. Further studies will be focused on the particular olfactory region of the brain of Carnotaurus, which may respond to a sensorial capability different from that developed in Aucasaurus, Viavenatorand probably AbelisaurusBonaparte and Novas.