INVESTIGADORES
ARIAS BECERRA Joan Salvador
artículos
Título:
A Fossil Lizard (Iguanoidea) from the Late Pliocene of Northwestern Argentina and New Information about the Phylogeny of Iguania
Autor/es:
DAZA, JUAN D.; ABDALA, V.; ARIAS, J. SALVADOR; GARCÍA-LÓPEZ, DANIEL; ORTIZ, PABLO
Revista:
JOURNAL OF HERPETOLOGY
Editorial:
SOC STUDY AMPHIBIANS REPTILES
Referencias:
Año: 2012 vol. 46 p. 104 - 119
ISSN:
0022-1511
Resumen:
A fragmentary fossil lizard from Uquía Formation (Late Pliocene), Jujuy Province, Argentina, is described. The material consists of disarticulated cranial bones from the snout and jaw that were part of a microvertebrate fossil assemblage generated by accumulation of predatory birds pellets. The phylogenetic analysis of 396 morphological characters indicates a sister group relationship between the new taxon and a clade formed by the families Liolaemidae, Leiocephalidae and Tropiduridae. Its uncertain position and substantial morphological differences justify its placement in a new genus. We present a detailed osteological description of the material, and compare the morphological features with other Iguanoidea. In the context of this new analysis of Iguania we included Pristiguana brasiliensis, the oldest iguanian from South America. The results of this analysis support the monophyletic status of Iguanoidea and diagnosed other groups within Iguania that are named and dignosed.
