Scientists identified new structures in the tail vanes of the prehistoric flying reptiles. By Elizabeth Landau Above the shores of prehistoric seas and lakes, pterosaurs roamed the skies.

It had feathers and wings, so it was clearly a bird — but it sported a long tail and sharp claws, which seemed reptilian. A smattering of other feathery Jurassic fossils, including those known ...

Analyzing turbulent flows in the magnetotail is difficult because of the limited extent of the tail and because the flows there are usually sub-magnetosonic. Observational analysis of turbulent flows ...