INVESTIGADORES
GOMEZ Raul Orencio
artículos
Título:
A new helmeted frog (Anura: Calyptocephalellidae) from an Eocene subtropical lake in northwestern Patagonia, Argentina
Autor/es:
GÓMEZ, R.O.; BÁEZ, A.M.; MUZZOPAPPA, P.
Revista:
JOURNAL OF VERTEBRATE PALEONTOLOGY
Editorial:
SOC VERTEBRATE PALEONTOLOGY
Referencias:
Lugar: Philadelphia; Año: 2011 vol. 31 p. 50 - 59
ISSN:
0272-4634
Resumen:
ABSTRACT?Eocene caldera-lake deposits from Río Pichileufú have yielded anuran
remains in association with a taxonomically diverse flora. The floral evidence suggests
that these anurans lived under climatic conditions similar to those of extant subtropical
rainforests. One of the anurans is a helmeted neobatrachian, which is represented by
articulated remains and is described herein as a new species of the extant genus
Calyptocephalella based on cranial and postcranial traits. This record indicates that,
despite its relatively conservative skeletal anatomy, Calyptocephalella has not always
been associated with the temperate austral forests that it inhabits today, as previously
stated. It also provides evidence of the biotic link with Australia that has been proposed
on the basis of other faunal and floral records, as well as on the paleogeographic history
of Patagonia during the mid-Cretaceous?Eocene interval. We also discuss the
significance of some cranial features that might reflect hyperossification.