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The Prehistoric World; or, Vanished races by Emory Adams Allen
page 50 of 805 (06%)
seek for any trace of man until we find undoubted proofs of the
existence of all the forms of animals below him. The last great
division of time is called Cenozoic.<20> This means new life
forms. In this age, the forms of life are much nearer our own.
As it was some time during this epoch when man makes his
appearance, we deem it best to go into more detail, and give the
subdivisions of this period. It has been amply sufficient to
give simply the outlines of the other periods. In order to fix
more clearly the sequence of life, we will give an outline
showing the periods we have reviewed, and also the subdivisions
of the Cenozoic time, which we are now to examine with
more care.


OUTLINE.

LIFE.
Archaean Time.
The Beginning: Includes the long lapse of time when the globe
could not support life, but towards its close faint traces of
life, both animal and vegetable appeared.

Paleozoic Time.
The Period of Old Life Forms: Forests of flowerless trees;
but pines grew in the coal measures. Animal life largely
invertebrate; but amphibians and reptiles among the vertebrate
appear at the close.

Mesozoic Time.
The Period of Middle Life Forms: Flowering trees increasing in
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