What is "drepanosaur"

Drepanosaurs (members of the clade Drepanosauromorpha) are a group of strange reptiles that lived during the Carnian stage of the late Triassic Period, between 220 and 216 million years ago. The various species of drepanosaurid were characterized by odd specialized grasping limbs and often prehensile tails, adaptions for arboreal (tree-dwelling), and/or possibly aquatic lifestyles. Fossils of drepanosaurs have been found in Arizona, New Mexico, New Jersey, Utah, England, and northern Italy. The name is taken from the family's namesake genus Drepanosaurus, which means "sickle lizard", a reference to their strongly curved claws.