 They are commonly dated to the Jurassic period (approximately 160–175 million years ago), though they are more likely from the early Cretaceous, roughly 130-120 million years ago.They were first described by Jean-Michel Dutuit and Achmed Ouazzou in 1980.The size, weight, and even family tree of the animal that made "Breviparopus" tracks is unknown, but a great deal of speculation has arisen about this animal.