Prolacertiformes

Prolacertiformes; Temporal range: 299–199 Ma PreꞒ Ꞓ O S D C P T J K Pg N Permian-Triassic
	Macrocnemus, a protorosaur from Europe
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Sauropsida
Subclass:	Diapsida
Infraclass:	Archosauromorpha
Order:	Prolacertiformes; Camp, 1945
Families
	Protorosauridae; Prolacertidae; Sharovipterygidae; Tanystropheidae;

Prolacertiformes (sometimes called protorosaurs) were an order of archosauromorph reptiles that lived during the Permian and Triassic Periods. Many species seem to have been adapted for an arboreal lifestyle, including the "delta-winged glider" Sharovipteryx, while others, such as Tanystropheus, had extremely long, stiffened necks (possibly used to catch fish), and may have been at least partly aquatic.

Other enigmatic reptile groups have sometimes^[where?] been assigned by some resarches^[who?] to the Prolacertiformes, including the drepanosaurids,^{[citation needed]} Longisquama, and the pterosaurs.^{[citation needed]} Senter (2004) re-assigned the bizarre, arboreal drepanosaurids and Longisquama to a group of more primitive diapsids called Avicephala, though some researchers^[who?] still place these forms among the prolacertiformes.