Pterodactyloidea Pterodactyloidea Pterodactyloidea (derived from the Greek words "πτερόν" ("pterón", for usual "ptéryx") "wing", and "δάκτυλος" ("dáctylos") "finger" meaning "winged finger", "wing-finger" or "finger-wing") is one of the two traditional suborders of pterosaurs ("wing lizards"), and contains the most derived members of this group of flying reptiles. They appeared during the middle Jurassic Period, and differ from the basal (though paraphyletic) rhamphorhynchoids by their short tails and long wing metacarpals (hand bones). The most advanced forms also lack teeth, and by the late Cretaceous, all known pterodactyloids were toothless. Many species had well developed crests on the skull, a form of
Macrurosaurus Macrurosaurus Macrurosaurus (meaning "large-tailed lizard") is the name given to a genus of dinosaur from the Early Cretaceous. It was a titanosauriform which lived in what is now Europe. The genus "Macrurosaurus" was named by Harry Govier Seeley in 1869 but not yet described so that it remained a "nomen nudum". In 1876 Seeley described the type species, "Macrurosaurus semnus", making the name valid. No other species are known. The generic name is derived from Greek "makros", "large", and "oura", "tail". The specific name is derived from Greek "semnos", "stately" or "impressive". The holotype of "Macrurosaurus", SM B55630, consists of