Paleozoic Era

Put the ERAs of the Phanerozoic EON in the correct order(oldest to youngest):

• Paleozoic, Mesozoic, Cenozoic

• Cenozoic, Mesozoic, Paleozoic

• Mesozoic, Paleozoic, Cenozoic

In which era do we currently live?

• Jurassic

• Paleozoic

• Mesozoic

• Cenozoic

The major groups of animals that lived during the Late Paleozoic were the ________________.

• reptiles

• amphibians

• invertebrates

The ___________ part of the Paleozoic era is often called the age of invertebrates.

• late

• early

• middle

The single land mass that existed about 245 million years ago is named what?

• Fossil
• Pangea
• Bob
• Tectonic plates

How old is the Earth?

• 46 billion years
• 4 billion years
• .46 billion years
• 4.6 billion years

Paleozoic BEGAN with the early invertebrates.

• True
• False

Wet, oxygen poor environments where, over time, plant material changed into coal.

• fuel swamps

• coal swamps

• dank swamps

• paleozoic swamps

Paleozoic also means what?

• Ancient life

• Water creatures

• New life

What major event happened at the end of the Paleozoic Era?

• Largest mass extinction

• Massive increase in life

• Large dinosaurs ruled the land

• Oxygen was abundant in the atmosphere