Actualmente

a Gorgosaurus libratus

Carcharocles chubutensis is an extinct species of shark that belongs to the genus Carcharocles

but a complex process of reduction

in social display

Zuniceratops christopheri Variante:Imprimado ActualmenteZuniceratops christopheri was a ceratopsian dinosaur from the Late Cretaceous of North America, known from fossil remains recovered from the Moreno Hill Formation in western New Mexico, United States. Formally described by Douglas Wolfe and James Kirkland in 1998, this taxon occupies a particularly important position in the evolution of horned dinosaurs, as it represents a transitional form between more primitive neoceratopsians and the more derived