Full length paper

Relaciones filogenéticas de Xenodontinae (Serpentes) neotropicales basadas en musculatura craneal

Cuadernos de Herpetología 13 (1-2): 19-35, 1999 smoro@unt.edu.ar

Abstract

The comparative anatomy of the cranial muscles of 34 species of neotropical Xenodontinae is analyzed. Twenty two variable characters are chosen, used in a phylogenetic analysis. Two species of Natricinae are used as outgroup. 139 trees are found that show the most probable relationships among the species analyzed. Although paraphyletic groups are evident, a prominent well supported clade is observed. The taxa of this clade present particular myological characteristics, that make their alimentary system very specialized, both morphologically and functionally.

Key words:

filogenia; musculatura craneal; Xenodontinae; neotropicales

Moro, S.A. 1999. Relaciones filogenéticas de Xenodontinae (Serpentes) neotropicales basadas en musculatura craneal. Cuadernos de Herpetología 13: 19-35.