PERIODS OF PALEOZOIC.

Question	Answer
Cambrian: Image: 5j3rsnk44mwpxr7e5sqvlsfq776jc3sachvcdoaizecfr3dnitcq 3 0 (binary/octet-stream)	First shellfish, primitive fish, trilobites, corals and mollusks were dominant in the oceans, as well as algae.
Ordovician: Image: 1 Ordovician Period Album (binary/octet-stream)	First land plants and initial fish appeared. Corals and Nautiloids also inhabited oceans.
Silurian:	First insects emerged and more plants were on land.
Devonian:	The fish period, the first sharks appeared, as well as bony fish. Amphibians and spiders and the first terrestrial forests started colonizing land
Carboniferous:	The first reptiles and insects with wings appeared on land.
Permian: Image: 1675 3316 Watermark (binary/octet-stream)	Diverse animal and plant life appeared, reptiles diversified. Then there was a mass extinction.

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	Created by Blanca Vega about 3 years ago