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

More than a century ago, researchers unearthed the remains of a tiny, ancient reptile from inside a swath of sandstone in northeastern Scotland. Most of its skeleton was long gone, but scientists ...

Archosauromorphs walked - across a 10,000-mile hellscape - so dinosaurs could run. According to a new study published in Nature Ecology and Evolution, archosauromorphs, early ancestors of dinosaurs ...

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 ...

The fossil record is crucial for understanding the origins and diversification of amphibians and reptiles. New discoveries ...

Some of the most extraordinary body transformations in evolution have occurred in animals that adapted to life in water from land-living ancestors, such as modern whales, turtles and seals. During the ...

(CNN) — Scientists have discovered a 246 million-year-old marine reptile fossil, the oldest of its kind to be found in the Southern Hemisphere, shining a new light on the early evolution of marine ...

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, ...

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 ...

For more than two centuries, scientists have argued over where dinosaurs came from and how a scattered set of bones turned ...