Talk:Eras

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Pre cambrian era: The earth was just a whirling mass of matter. Live species: simple bacteria, sea weeds, sponges

Paleozoic era: (first 3 period) The land emerge Some fishes evolved

Last 3 periods: It has a swampy environment Some water animals(fishes) explore the land

Mesozoic era: Dinosaurs appeared but at the last 3 periods disappear. Some scientists said that there was an asteroid jumped on the earth.

Cenezoic era: People appeared but first man and woman are apes and just evolve to what are we now Some animals appeared like mammals, insects, reptiles.....

By: Ma. Celine A. Dizon