The Mesozoic, or "Middle Life", Era is commonly called the Age of Dinosaurs. It began with the catastrophic Permian/Triassic mass extinction, and was truncated by the Cretaceous/Tertiary mass extinction, and is composed of the Triassic, Jurassic, and Cretaceous Periods. This category is for any website dealing with the fossil record of the Mesozoic.
An overview of the era from the UC Berkeley Museum of Paleontology.
Thanks to DMOZ, which built a great web directory for nearly two decades and freely shared it with the web. About us