Descripción
The record
of the South American fossil Squamata extends from the Late Cretaceous to the
Holocene. The recorded families are Iguanidae s.l., Teiidae, Gekkonidae,
?Scincidae, Amphisbaenidae, Boidae, Aniliidae, Colubridae and Viperidae
Dinilysiidae from the Late Cretaceous of Patagonia and Palaeopheidae from the
Late Eocene of Ecuador are the only known extinct recorded families. The families
distribution during the Cretaceous and most of the Tertiary apparently was more
extensive than at present, due to more generalized subtropical climatic
conditions. The geological events during the Cenozoic would have caused
climatic and environmental changes that would have favoured the appeareance of
new adaptative types and the restriction in the distribution of many forms.
Albino, A. (1994). Estado actual del registro de escamados extinguidos de América del Sur y sus implicancias paleoambientales. Cuadernos
de Herpetología, 8 (1), pp. 146-154
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