Select one of the following:

Cenozoic	:	From 65 Million Years Ago
Cretaceous	:	144 to 65 Million Years Ago
Jurassic	:	206 to 144 Million Years Ago
Triassic	:	248 to 206 Million Years Ago
Paleozoic	:	543 to 248 Million Year Ago
Big Bang	:	Beginning of Time