Discovery sheds light on the Tuatara, the last living member of a once-diverse group of reptiles that has almost entirely been supplanted.

Harvard researchers find rapid evolution of reptiles was triggered by nearly 60 million years of global warming and climate change.

The first ichthyosaurs swam through the primordial oceans in the early Triassic period about 250 million years ago and weighed 80 tons.

Study suggests that all living snakes evolved from a handful of species that survived the giant asteroid impact that wiped out the dinosaurs

Indiana Jones hates snakes. And he's certainly not alone. The fear of snakes is so common it even has its own name: ophidiophobia.