it had a crescent-shaped tail

Miragaia longicollum was a medium-sized herbivorous dinosaur

The "dire wolf" (Aenocyon dirus) is an extinct species of canid that lived in North America during the Pleistocene

Mixotoxodon larensis is a genus of extinct notoungulate mammals of the family Toxodontidae that inhabited America during the Pleistocene

It was characterized by its head adorned with a large horn-shaped bony crest over the snout and two smaller crests over the eyes

Argentinosaurus huinculensis Irritator it had a crescent-shaped tailArgentinosaurus huinculensis es uno de los dinosaurios ms grandes conocidos y pertenece al grupo de los titanosaurios, un clado de saurpodos que habit Sudamrica durante el perodo Cretcico Superior, hace aproximadamente entre 96 y 92 millones de aos. Este colosal herbvoro fue descubierto en la Formacin Huincul, en la provincia de Neuqun, Argentina, y su descripcin inicial en la dcada de 1990 lo convirti en un cono de la paleontologa, no solo por su