hace aproximadamente 68 a 66 millones de años en lo que hoy es América del Norte

Medidas aproximadas del Xenoceratops:

Like other cetaceans

con una bóveda rugosa que sugiere la presencia de osteodermos

"Australovenator"

Basilosaurus cetoides alphadon hace aproximadamente 68 a 66Basilosaurus cetoides was an ancient cetacean that lived approximately 40 to 34 million years ago, during the late Eocene. Despite its name, which means "king lizard", this animal was actually a marine mammal and not a reptile, although its elongated skeleton initially led to confusion about its classification. This cetacean reached impressive sizes, with a length that could range between 17 and 19 meters, making it one of the largest predators of its