During the Mesozoic period the Earth consisted of only one single
mass of land. About 200 million years ago this huge continent, Pangaea,
broke into many pieces, which started to drift apart. Continents moved
slowly into the position they are today.
The climate during the Age of Dinosaurs was different than today's.
It was warmer and there was more vegetation. The land was full of
swamps, green plains, rivers and lakes. The first forests, mostly
conifers that had cones on them emerged. Ferns and mosses also appeared
on the Earth.Dinosaurs were land animals that lived in almost all parts of the world, from tropical regions to deserts.