Many modern amphibians have biphasic life cycles with aquatic larvae and terrestrial adults.
The central questions are how and when this complicated ontogeny was established, and …

Extant anuran amphibians originate from an evolutionary intersection eventually leading to
fully terrestrial tetrapods. In many ways, they have to deal with exposure to both terrestrial …

Habitat is one of the most important factors shaping organismal morphology, but it may vary
across life history stages. Ontogenetic shifts in ecology may introduce antagonistic selection …

With predation and carnivory as catalysts, the first known eye appeared in a trilobite during
the Cambrian explosion approximately 543 million years ago. This period was a crucible of …

Evolutionary integration (covariation) of traits has long fascinated biologists because of its
potential to elucidate factors that have shaped morphological evolution. Studies of tetrapod …

The Branchiosauridae was a clade of small amphibians from the Permo‐Carboniferous with
an overall salamander‐like appearance. The clade is distinguished by an extraordinary …

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 …

Limb development in salamanders differs from other tetrapods in that the first digits to form
are the two most anterior (preaxial dominance). This has been proposed as a salamander …

The diversification of many lineages throughout natural history has frequently been
associated with evolutionary changes in life cycle complexity. However, our understanding …

Live‐bearing has evolved in all three orders of amphibians—frogs, salamanders, and
caecilians. Developing young may be either yolk dependent, or maternal nutrients may be …