Term
| What are the 12 periods of time in order? |
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Definition
| Precambrian, Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous, Paleogene, and Neogene |
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Term
| What period was its own era? |
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Definition
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Term
| What are the 3 eras (in order)besides the Precambrian? |
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Definition
| Paleozoic, Mesozoic, and Cenozoic |
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Term
| What era has the most periods so far? |
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Definition
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Term
| What era has the fewest periods so far (besides Precambrian)? |
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Definition
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Term
| How long ago was the earth formed and what period did it take place in? |
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Definition
| 4.6 billion years ago in the Precambrian Period |
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Term
| Decribe what formed in the Cambrian Period. |
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Definition
Trilobites:
small, aquatic creatures related to modern woodlice and crabs; ranging from the size of a flea to the size of an open textbook; more than 17000 different species |
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Term
| What became common in the Ordovician Period? |
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Definition
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Term
| What became common in the Silurian Period? |
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Definition
Pseudocrinites
(sue-doh-krihn-ites) |
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Term
| What terrorized the seas in the Devonian Period? |
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Definition
Dunkleosteus
(large fish with sharp teeth, but not as many teeth as a shark) |
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Term
| What started becoming plenty in the Carboniferous Period? |
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Definition
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Term
| What became the most fearsome predator of its time, in the Permian Period? |
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Definition
Dimetrodon:
built like a Komodo Dragon, but with a very large sail on its back; WAS NOT A DINOSAUR |
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Term
| What evolved during the Triassic Period? |
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Definition
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Term
| What started evolving in the Jurassic Period? |
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Definition
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Term
| What evolved during the Cretaceous Period and what mainly suffered during that mass extintion? |
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Definition
Mammals evolved (the first were small and rat-like);
Dinosaurs mostly died out |
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Term
| What became plenty in the Paleogene Period? |
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Definition
| Primates such as Eosimias |
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Term
| What evolved in the Neogene Period and still lives on today? |
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Definition
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Term
| In what animal kingdom are dinosaurs? |
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Definition
| BIRDS, NOT REPTILES like many people think! |
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