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
Leon (given name) Leon (given name) Leon is a first name of Greek origin-the Greek λέων (léon; leōn), meaning "lion," has spawned the Latin "Leo," French "lion," Irish "Leon" and Spanish "León." Perhaps the oldest attested historical figure to bear this name was Leon of Sparta, a 5th-century BCE king of Sparta, while in Greek mythology Leon was a Giant killed by Heracles. During the Christian era Leon was merged with the Latin cognate Leo, with the result that the two forms are used interchangeably. A similar Greek name to Leon is Leonidas, meaning "son of a lion", with Leonidas I, king of