hace aproximadamente entre 1

in the province of Río Negro

y que caminaba sobre cuatro patas robustas y columnares

although poorly known

A juvenile specimen discovered provided insight into the growth and development of Rapetosaurus

Tenontosaurus tilletti Variant:Primed hace aproximadamente entre 1Tenontosaurus tilletti is a herbivorous ornithischian dinosaur from the Early Cretaceous, dated primarily between 115 and 108 million years ago (Aptianearly Albian), belonging to the Iguanodontia group and considered a relatively basal form within Ornithopoda. Its fossil remains have been found mainly in the Cloverly and Antlers formations of the United States, especially in the states of Montana, Wyoming, Oklahoma, and Texas, making it one of the