Labels:animal | mammal | bat | text OCR: 140 MYA PTERODACTYLUS DTEROSAURS were warm-blooded reptiles (animals that have waterproof skin and lay eggs) related to dinosaurs. They were the first flying vertebrates (animals with a backbone) to evolve. Pterodactylus was a pterosaur with a wingspan of 75 cm (2ft 5 in). NARROW JAWS SKIN-COVERED WINGS LONG FINGER BONES SKILL FUL FLIER Pterodactylus probably swooped down to snatch insects and fish.