Flying insects, such as flies, butterflies, and dragonflies, have thin, membranous wings that they move by altering their body shape. Birds possess strong wings made of bone and muscle ...

They were warm-blooded, walked on two legs, and flew on membranous wings that were supported by arm and finger bones — especially by a long fourth finger, with the back edge of the membrane ...

The first discovery of a bat-like winged dinosaur was in 2015, but scientists had dismissed the initial finding because it was so bizarre.

Paleontologists continue to discuss the possibility of their even earlier presence in the common ancestor of dinosaurs and pterosaurs (the first flying vertebrates with membranous wings ...

UNIGE scientists reveal the key role of specific genes in feather development, providing insights into their evolution from dinosaurs.