Insects belong to a broader group of six-legged animals called hexapods. This group also includes other less well-known, ...

Add Yahoo as a preferred source to see more of our stories on Google. A rare fossil of Joaquinraptor casali from Patagonia reveals a powerful predator that may have dined on crocodiles. (CREDIT: The ...

A 165-million-year-old fossil has revealed an extraordinary Jurassic predator that may help explain how mammals developed one ...

A tiny 242-million-year-old fossil from Devon is shaking up scientists’ assumptions about the earliest members of the lizard lineage. Instead of the expected skull hinges and palate teeth typical of ...

Ancient Sea-Moth Predator Rewrites Arthropod Evolution A finger-sized marine predator with three eyes and an unusual respiratory system is challenging what scientists thought they knew about the early ...

This article predates the current owners of Science Blog. It has not been reviewed under the current editorial process and is kept as part of the archive. A reconstruction of the oldest known ...