Living turtles are characterized by extraordinarily low species diversity given their age. The
clade's extensive fossil record indicates that climate and biogeography may have played …

Oxygen played a pivotal role in the evolution of multicellularity during the Cambrian
Explosion. Not surprisingly, responses to fluctuating oxygen concentrations are integral to …

Background Body size is intimately related to the physiology and ecology of an organism.
Therefore, accurate and consistent body mass estimates are essential for inferring …

Amphibia comprises over 7000 extant species distributed in almost every ecosystem on
every continent except Antarctica. Most species also show high specificity for particular …

True frogs of the genus Rana are widely used as model organisms in studies of
development, genetics, physiology, ecology, behavior, and evolution. Comparative studies …

Despite their complex evolutionary history and the rich fossil record, the higher level
phylogeny and historical biogeography of living turtles have not been investigated in a …

Our goal is to provide a current list of reptile species of Paraguay, with maps of their known
occurrences. Surprisingly little research has been conducted on the reptile fauna of …

The Linnaean classification system provides the universal reference system for
communicating about the diversity of life and its hierarchic history. Several limitations that …

Turtles of the clade Pan-Testudinoidea have a rich fossil record in North America, including
the Caribbean, ranging from the late Paleocene to the Holocene. All earlier reports cannot …

ABSTRACT Indochina (Laos, Cambodia, and Vietnam) houses over 600 species of
amphibians and reptiles, roughly a quarter of which has been described within the last 15 …