84 to 66 million years ago in what is now Argentina

all of them small

similar to the function of claws in some modern insectivorous mammals

with a dense bone structure and robust limbs

Length 278 mm

Zuul crurivastator Monolophosaurus 84 to 66 million yearsZuul 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