MORFOLOGIA DENTARIA Y BIOMECANICA MASTICATORIA DE LOS CINODONTES (REPTILIA, THERAPSIDA) DEL TRIASICO ARGENTINO: I ANDESCYNODON MENDOZENSIS BONAPARTE (TRAVERSODONTIDAE)

Ricardo Goñi, Francisco J. Goin

Abstract


Most remarkable dental features of juvenile and adult specimens of Andescynodon mendozensis Bonaparte (Cynodontia, Traversodontidae) are described. The craneomandibular and dental features of representatives of this species share -with slight variations- a common structural pattern among Traversodontidae of Puestoviejan Reptile age-i.e., Andescynodon, Pascualgnathus and Rusconiodon-, An adjusted dental occlusal mechanism is inferred, with mainly orthal mandibular movements and an "occlusal guide" system represented by the complex canines-paracanine fossae. The postcanine morphology of A. mendozensis and the inferred masticatory mechanisms suggest opportunistic dietary habits for this species, probably omnivorous or omnivore-insectivorous habits, but not strictly herbivore.

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