Mesozoic Era

The Mesozoic Era meaning "middle life" is the middle of the three geological eras of the Phanerozoic Eon. It lasted from about 252 to 66 million years ago. It is also called the Age of Reptiles and the Age of Conifers. The Mesozoic was preceded by the Paleozoic and succeeded by the Cenozoic.

Start Date: 251.902 million years ago

End Date: 66 million years ago