With its disappearance

similar to the function of claws in some modern insectivorous mammals

Length 278 mm

in the Pisco basin

approximately 49-48 million years ago

Zuul crurivastator Monolophosaurus With its disappearanceZuul crurivastator is a herbivorous ankylosaurine dinosaur from the Campanian stage of the Late Cretaceous (approximately 76. 275. 2 million years ago) that has provided valuable morphological and paleoecological data thanks to an exceptionally complete specimen recently described. It was found in the Judith River Formation in northern Montana (USA), and its extraordinary preservation includes a complete skull, caudal club, osteoderms in situ, keratin