Pterodactylus antiquus, 1st described pterosaur Quetzalcoatlus and it's implied that Helicoprion

and it's implied that Helicoprion was carnivorous

Distinctions between Gopherus and Stylemys are very minor

Actinocrinites gibsoni

It likely resembled modern-day New World monkeys and was about the same size as a modern howler monkey

probably for defense

Pterodactylus antiquus, 1st described pterosaur Quetzalcoatlus and it's implied that HelicoprionThe type specimen of the animal now known as Pterodactylus antiquus was the first pterosaur fossil ever to be identified. The first Pterodactylus specimen was described by the Italian scientist Cosimo Alessandro Collini in 1784. Pterodactylus is known from over 30 fossil specimens, and though most belong to juveniles, many preserve complete skeletons. Pterodactylus antiquus was a relatively small pterosaur, with an estimated adult wingspan of about 1.