Crown-group frogs (Anura) originated over 200 Ma according to molecular phylogenetic
analyses, though only a few fossils from high latitudes chronicle the first approximately 60 …

The nearly 200 species of direct-developing frogs in the genus Eleutherodactylus (the
Caribbean landfrogs, which include the coquís) comprise an important lineage for …

The earliest records of frogs in South America, which are also some of the oldest known
occurrences of this group of amphibians, are from the Jurassic of the most southern part of …

DISCUSSION The presence of a unique, discrete, and easily identifiable feature on multiple
fossil specimens from two Judithian localities suggests that the designation of a new taxon is …

Approximately one-half of all species of amphibians occur in the New World tropics, which
includes South America, Middle America, and the West Indies. Of those, 27%(801 species) …

Madagascar has a diverse but mainly endemic frog fauna, the biogeographic history of
which has generated intense debate, fueled by recent molecular phylogenetic analyses and …

The frog genus Odontophrynus comprises 10 species arranged in three species groups that
inhabit southeastern South America. In Argentina, it is represented by the O. americanus …

The heart of this book consists of detailed systematic accounts of the known fossil frogs and
toads (anurans) of North America and their localities. Extinct fossil frogs and toads are fully …

Frogs are a familiar and diverse component of tropical forests around the world. Yet there is
little direct evidence from the fossil record for the antiquity of this association. We describe …

Mesozoic fossils of frogs are rare in the palaeontological record, particularly those exhibiting
soft tissues that offer limited insights into early life-history characteristics. Here we report on …