Pterodactyl

The Pterodactyls (or Pterosaurs) were a type of winged reptiles native to Earth from the late Triassic to the late Cretaceous. They were wiped out, along with the dinosaurs, by a time-traveling space freighter. (DW: Earthshock)

One type of Pterodactyl was brought to the 20th century during Operation Golden Age. They were used for general chaos and to help guard the base. (DW: Invasion of the Dinosaurs)

Another type, the Pteranodon, had one individual brought to 20th century Cardiff by the Cardiff Rift. This Pteranodon was captured by Torchwood 3 and kept as a mascot.