 Domin gashin fuka-fukin dinosaur bashi da isasshen tsari, wanda ake kira kara, amma suna da sauran sifofin gashin fuka-fukan  tsandar gashi da kaan  masu binciken sun kammala cewa wata kila karan wani cigaba ne na juyin halittan wadan sauran sifofin. 