Viviparity, the live-bearing mode of reproduction, has evolved independently in several vertebrate lineages, including squamate reptiles and seahorses. In reptiles, evolutionary transitions from ...

Life restoration of two Skiphosoura bavarica in flight. (Gabriel Ugueto via SWNS) By Stephen Beech via SWNS An "incredible" new fossil find has revealed the dramatic evolution of flying reptiles that ...

Our bones did not begin deep inside the body. They started in the skin, not long after the first complex animals took shape.

Long before dinosaurs became dominant, Earth was ruled by an unsettling cast of reptiles that reshaped life after the ...

The pterosaurs are extinct flying reptiles that lived alongside their close relatives, the dinosaurs. The largest of these reached 10 m in wingspan, but early forms were generally limited to around 2 ...

Body coverings such as hair and feathers have played a central role in evolution. They enabled warm-bloodedness by insulating the body, and were used for courtship, display, deterrence of enemies and, ...

The newly described Mirasaura grauvogeli from the Middle Triassic had a striking feather-like crest, hinting that complex skin appendages arose far earlier than previously believed. Its bird-like ...

MSRLSI copy gift of Dr. George R. Zug and signed by author VPAL copy gift of the author; signed by the author and inscribed for the NMNH Library "Over 300 million years ago, an early land vertebrate ...

WASHINGTON — Scientists in Australia have identified the oldest known fossil footprints of a reptilelike animal, dated to around 350 million years ago. The discovery suggests that after the first ...

An "incredible" new fossil find has revealed the dramatic evolution of flying reptiles that lived alongside dinosaurs. The complete specimen discovered in Germany finally shows how now extinct ...