Triassic
The Triassic age encompasses the time between 245 million years ago to 208 million years ago. There were no separate continents as we know them today, as the land was all joined in one continent called Pangaea. Climatic conditions were warm and rainy and it was during this time that the first dinosaurs migrated across the land. At this time, dinosaurs were small; only 10 feet long or less. Pterosaurs, which are flying reptiles, first took flight.
Jurassic
The Jurassic era refers to the period of time between 208 million to 145 million years ago. Pangaea slowly divided in two continents and the climate became more arid and there were changes between seasons. Birds first appeared along with the giant plant-eating dinosaurs called sauropods which walked on four legs. Theropods, the meat-eating, bipedal, hollow-boned dinosaurs, also evolved.
Cretaceous
The Cretaceous age was between 145 million to 65 million years ago. Flowers made their appearance and the continents separated into several more. The spectrum of climates on earth varied greatly; from deserts to hot swamps to frosty Arctic cold. The variey of species of dinosaurs was immense. Theropods, sauropods and the duck-billed varieties populated this era. One of the last theropods was the infamous Tyrannosaurus Rex.

(The paintings on this page are done by the fabulous artist, Karen Carr. See more of her art at www.karencarr.com)