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
Christian (given name) the nicknames or shortened forms "Cris", "Crissy", "Tina", or "Xian". Christian (given name) Christian originated as a Baptismal name used by persons of the Christian religion. It is now a given name born by males, and by females as Christiana and other feminized variants. An historically commonly used abbreviation, used for example on English 17th century church monuments and pedigrees, is "Xpian", using the Greek Chi Rho Christogram "Χρ", short for "Χριστός", Christ. The Greek form of the baptismal name is "Χριστιανός", a Christian. The name denotes a follower of Christ, thus a Christian. It has been used as a