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
Viviparous lizard Viviparous lizard The viviparous lizard or common lizard, Zootoca vivipara (formerly "Lacerta vivipara"), is a Eurasian lizard. It lives farther north than any other species of non-marine reptile, and most populations are viviparous (giving birth to live young), rather than laying eggs as most other lizards do. It is the only species in the monotypic genus Zootoca. Both ""Zootoca"" and ""vivipara"" mean "live birth," in Greek and Latin respectively. It was called "Lacerta vivipara" until the genus "Lacerta" was split into nine genera in 2007 by , Arribas & Carranza. "Zootoca vivipara" can be seen in a variety of different