Did dinosaurs evolve from lizards?

Dinosaurs didn't spring suddenly into existence two hundred million years ago, huge, toothy, and hungry for grub. read more

The potential co-evolution of plants and herbivorous dinosaurs has been subject to extensive speculation. The appearance of prosauropods in the late Triassic has been tentatively linked either to the demise or diversification of types of flora at that time. read more

Dinosaurs are archosaurs, while lizards are squamates. Squamates include lizards, and snakes, while the third type of reptile are the Testudines, the turtles and tortoises Archosaurs include crocodiles, alligators, birds, and extinct groups such as Pterosaurs and the non-avian dinosaurs. read more

Like all living things, they evolved, slowly and gradually, according to the rules of Darwinian selection and adaptation, from previously existing creatures--in this case, a family of primitive reptiles known as archosaurs ("ruling lizards"). read more