
Lepidosaurians
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Subclass: Diapsida
Infraclass: Lepidosauromorpha
Superorder: Lepidosauria
Orders: Sphenodontia, Squamata

Avicephala is an extinct order of bizarre diapsid reptiles that lived during the Late Permian and Triassic periods. Many species had odd specialized grasping limbs and prehensile tails, adapted to arboreal (and possibly aquatic) lifestyles.