El aparato masticador del género extinto <i>Actenomys</i> Burmeister, 1888 (Rodentia, Ctenomyidae): inferencias sobre su modo de vida

L. J. M. de Santis; G. J. Moreira

doi:10.3989/egeol.00561-2156

El aparato masticador del género extinto Actenomys Burmeister, 1888 (Rodentia, Ctenomyidae): inferencias sobre su modo de vida

Authors

L. J. M. de Santis Facultad de Ciencias Naturales y Museo. Cátedra de Anatomía Comparada. Buenos Aires
G. J. Moreira Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIC).

DOI:

https://doi.org/10.3989/egeol.00561-2156

Keywords:

Rodentia, Actenomys, masticatory apparatus, habitat

Abstract

The genus Actenomys is registered from Plioceno sediments of Buenos Aires province, Argentina. Anatomy of skull and dentition of the genus is described, giving special emphasis to the origin and insertion points of the masticatory musculature. Actenomys is compared with the extant fossorial rodent of the genus Ctenomys, and the development of the masticatory muscles and their degree of functionality are inferred. It is concluded that Actenomys presents a less robust skull, with a masticatory musculature in agreement and incisives with great procumbency. This evidence could explain a possible adaptation of Actenomys to dig using the incisives and an adaptation to live in habitats of higher humidity than the extant forms.

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Published

2000-04-30

How to Cite

de Santis, L. J. M., & Moreira, G. J. (2000). El aparato masticador del género extinto Actenomys Burmeister, 1888 (Rodentia, Ctenomyidae): inferencias sobre su modo de vida. Estudios Geológicos, 56(1-2), 63–72. https://doi.org/10.3989/egeol.00561-2156

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Issue

Vol. 56 No. 1-2 (2000)

Section

Articles

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