27 déc. 2017 - First mammals
Description:
First mammals evolved from a population of vertebrates called therapsids ("mammal-like reptiles") at the end of the Triassic period and coexisted with dinosaurs throughout the Mesozoic Era.Ajouté au bande de temps:
Date:
27 déc. 2017
Maintenaint
~ Il y a 6 ans et 5 mois
