 "Drepanosaurus" is known to have a huge claw on the index finger of each hand along with the tail claw.The skull of "Drepanosaurus" has never been found and is still unknown, however, the skulls of other drepanosaurs like "Megalancosaurus" give us an idea of what the skull of "Drepanosaurus" might look like.Looking at "Megalancosaurus's" skull shows that the claws of each index finger were probably the size of the entire head of "Drepanosaurus" and a bird like jaw and head shape.