The Phanerozoic Eon
570 million years ago to the Present

 

Paleozoic Era 570 million to 250 million years ago

 

Mesozoic Era 250 million to 65.5 million years ago

 

Cenozoic Era 65.5 million to the Present

 

 

Return to Miraculum Antiquitus
Return to the Explorations Index

 

Questions, comments?  Email me!

 

 

Contents © John M. and Margo L. Dollan 2003
Other usage cited at Usage Permission Page
This Page first uploaded December 15, 2003
Most recent update for this page December 15, 2003