The first pterosaurs had a sail-like tensioning system for flying with potentially cumbersome tail vanes, which they could have used for displays, a new study finds.

Leslie Katz covers the intersection of culture, science and tech. An artist's reconstruction of the newly named dinosaur whose remains were destroyed in a 1944 WWII ... [+] air raid ...

One member of this group was a large, sail-backed animal called dimetrodon, which looks like it could be a dinosaur but isn’t. Then 252 million years ago came the Permian-Triassic extinction event.

The most interesting element of the Dimetrodon is the large red sail along its spine, which makes the dinosaur rather fearsome looking. It would be exciting to see a wider variety of dinosaurs in ...