1. Reptiles Roamed The Earth Long Before The Beloved Dinos Did
Despite the common misconception, dinosaurs were not the first type of prehistoric reptile. Before dinosaurs came the archosaurs (or "ruling lizards"), the pelycosaurs (or "bowl/axe lizards") and therapsids (or "mammal-like lizards"). These ancient reptiles lived for about 100million years before the dinosaurs even came into existence.