Lesson 2
The Paleozoic Era
Predict three facts that will be discussed in Lesson 2 after reading the headings. Record your
predictions in your Science Journal.
Summarize the extent of the Paleozoic era.
Early Paleozoic
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.
The Paleozoic era lasted for
from
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,
mya to
mya.
Characterize the Early Paleozoic era in the organizer
.
below.
Early Paleozoic
organisms
without
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.
all living in
called the
Contrast the Early Paleozoic era with the present.
Then
Now
Life on land
Amount of
land mass
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.
Point out the differences between present-day North America
and the same landmass during the Paleozoic era.
Geologic Time
175
Lesson 2 | The Paleozoic Era (continued)
Middle Paleozoic
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Characterize the Middle Paleozoic era in this organizer.
.
Insects and first green
called the
appeared
on
.
Middle
Paleozoic
divided into the
earliest organisms with
and
periods
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.
Identify the cause of the formation of the Appalachian
Mountains.
Cause:
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Characterize the Late Paleozoic era.
.
Late
Paleozoic
divided into the
called the
and then the first
and
appeared
periods
176
Geologic Time
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Late Paleozoic
Effect:
Added land heaved
upward and formed the
Appalachian Mountains.
Lesson 2 | The Paleozoic Era (continued)
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.
Sequence the development of coal in coal swamps.
1.
grew in swamps along
.
2. When
died, they
into
.
3. Plant matter changed into
over time.
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.
Define Pangaea, and explain its formation.
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.
Summarize possible causes of the Permian mass extinction.
Possible Cause
Related Effect
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Formation of Pangaea
Meteorite impact
Volcanic eruption
Summarize the overall evolution of life forms during the Paleozoic era.
Geologic Time
177