Some graphics reproduced using Print Shop Deluxe, Broderbund
Software, Inc. All Rights Reserved used by permission.
The Classroom does not claim
all descriptions of sites to be their own words.
The Classroom makes no promises or representations about the gadgets on
this site as to quality. content or performance
Epochs
Epochs: the stages or Earth's
development which are Precambrian Era, Paleozoic
Era, Mesozoic Era, Cenozoic Era and many Scientist
now claim we are entering a new Era called the
Anthropocene Epoch.