Scientists in Chile have unearthed a rare cemetery with well-preserved bones of pterosaurs. The find was made 65kms away from another site where pterosaur remains were found. Pterosaurs were flying creatures with a long wingspan that are believed to have lived alongside dinosaurs. They fed on small aquatic creatures by filtering water through their long thin teeth. They are believed to have roamed the Atacama Desert in South America more than 100 million years ago.