Pterosaur fossils are known from all of the continents on earth. They are very rare as fossils and many interesting and strange types of pterosaurs have been found. However, these fossils are only a small sample of the types that existed in the ancient past.
Pterosaurs are split into two main groups;
Rhamphorhynchoids - which have long tails and small wing metacarpal bones. These are the earliest types of pterosaurs
Pterodactyloids - which have short tails and long wing metacarpal bones. These pterosaurs eventually evolved into the largest flying animals ever known on Earth.