Triassic Period

Detailed Overview

The Triassic period marked the recovery from the Permian extinction and saw the emergence of the first dinosaurs and mammals. The period began with a world dominated by synapsids but ended with dinosaurs becoming the dominant land animals. This time also saw the evolution of the first flying vertebrates (pterosaurs) and many new groups of marine reptiles. The period ended with another major extinction event that helped establish dinosaur dominance.