Aerosteon riocoloradensis Nigersaurus meaning they lived at the

meaning they lived at the bottom of the sea

The neural spines were moderately tall and one spine in particular expanded in a trapezoidal

not interdigitating as in many modern crocodiles specialized in catching fish

including Eozostrodon parvus

Aerosteon riocoloradensis Nigersaurus meaning they lived at theAerosteon riocoloradensis es un dinosaurio terpodo del Cretcico Superior (aprox. 84 millones de aos), perteneciente al clado Megaraptora, descrito a partir de restos fsiles hallados en la Formacin Anacleto, en la Patagonia argentina. Su nombre, que significa huesos de aire, hace referencia a una caracterstica anatmica distintiva: la presencia de extensas cavidades neumticas en los huesos, asociadas a un sistema respiratorio avanzado comparable al de