During the Mesozoic Era the earth's climate varied from
very dry to moist. The temperature cooled off during this era as
Dinosaurs were the main animal during this period,
however they became extinct at the end of the Mesozoic Era after ruling the
earth for more than 100 million years.
Tiny small mammals and the first birds also arose during
this era. Palm trees and cone-bearing plants were plentiful.
It was during the end of this era that flowering plants developed.
The Cenozoic Era was hot and moist. Swamps covered
large areas of land at this time. Forests and flowering plants
continued to grow and grasslands developed as well. Mountain ranges
began to form during the middle of this era.
Mammals were widespread at this time. These
primitive mammals however disappeared during the middle of the era, and
were replaced by modern animals. Fossil records show that humans
also appeared at this time.
Late in the Cenozoic Era, the temperatures began to
cool. Large areas of land were covered with glaciers. Large
wooly mammals called mammoths roamed the earth during this period.
As the earth warmed up and the glaciers melted the mammoths became
extinct, just as the dinosaurs of the Mesozoic Era had.
We continue to live in the Cenozoic Era. Changes
continue to occur and develop. The changes however occur so slowly
they are not easy to identify.
Directions: Answer the questions about the
Mesozoic and Cenozoic Eras.
the main large animals during the Mesozoic Era.
During which era did grasslands appear and mountains
During which era did birds first inhabit the earth?
During which era did glaciers cover the earth?
Dinosaurs became extinct after more than 100
years of ruling the earth.
Dinosaurs became extinct during which era?
Large wooly animals called
roamed the earth during the Cenozoic Era.
These large wooly animals became extinct during which
During which era did mammals become widespread?
During which era did flowering plants develop?
Which era do we presently live in?
Which of the following statements is true about the
are presently occurring during this era.
Changes continue to occur
Put the eras in order. Use 1 for the oldest, 2, 3,
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