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International Journal of Morphology

On-line version ISSN 0717-9502


SQUARCIA, Silvia Margarita; SIDORKEWICJ, Nora Silvia  and  CASANAVE, Emma Beatriz. Cranial Osteology of the Armadillo Chaetophractus villosus (Mammalia, Xenarthra, Dasypodidae) . Int. J. Morphol. [online]. 2006, vol.24, n.4, pp.541-547. ISSN 0717-9502.

The morphology and morphometry of the cranial bones of Chaetophractus villosus were studied. The skull components are morphologically similar between adults of both sexes, and follow the generalized pattern for most of described dasypodids. The morphometric analysis, however, demonstrated that the bones lying in the rostrocaudal plane are mostly longest in females, determining higher values of the total, basal and condilobasal lengths of the skull, which are the main variables that contribute to a sexual dimorphism in this species

Keywords : Dasypodidae; Morphology; Osteology; Skull; Sexual dimorphism.

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