Third upper molar enlargement in sigmodontine rodents (Cricetidae): morphological disparity and evolutionary convergence

 

Título: Third upper molar enlargement in sigmodontine rodents (Cricetidae): morphological disparity and evolutionary convergence.
Identificador de recurso: https://www.degruyter.com
Fecha: 2019-09-10
Autor: Ronez, Christophe; Barbière, Franck; De Santis, Luciano; Pardiñas, Ulyses F.J.
Otros colaboradores:  
Editorial: Mammalia
Derechos:  

 

Descripción We studied the enlargement of the upper third molar (M3), with respect to the upper second molar in sigmodontine rodents, the largest subfamily of living  cricetids. M3 is enlarged in extant and extinct members of at least six tribes (Andinomyini, Euneomyini, Oryzomyini, Phyllotini, Reithrodontini and Sigmodontini), all of them also sharing hypsodonty, planate crowns and overall dental simplification in the context of Sigmodontinae. Enlargement is expressed in four ways, including simplification or modest complication of occlusal design on a single plane. M3 enlargement in sigmodontines is primarily associated with increasing herbivory rather than strictly with phylogeny, and thus presents a classic example of evolutionary convergence.
Claves herbivory; hypsodonty; molar proportions; Muroidea; Sigmodontinae.
Relación ISSN:1864-1547
Cobertura EC

 

Idioma en
Volumen 84 (3)
Formato pdf
Tipo de recurso texto
Fuente https://doi.org/10.1515/mammalia-2019-0031
Nombre de archivo 2019-09-10-ronezchristophe