トップページ(top page)> 中生代白亜紀前期の世界(The world of Early Cretaceous)
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中生代・白亜紀前期の世界
( Early Cretaceous) 1億4500万年前〜9900万年前 (145 million years〜99 million years ago) |
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(The former age) 前の時代へ←■ →次の時代へ (The next age) |
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世界の様子 Environment |
There is no evidence of mass extinction during the Jurassic and Cretaceous,
and the Cretaceous climate was still very warm and moist.
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生物 |
The climate of this period became hotter all over the world.
Dinosaurs had sails on their backs, like a radiator to get
rid of heat, including
Spinosaurus and
Ouranosaurus from Africa
and
Amargasaurus from South America.
| 古生代 | エディアカラ紀 | カンブリア紀 | オルドビス紀 | シルル紀 | デボン紀 | 石炭紀 | ペルム紀 |
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| 中生代 | 三畳紀前期 | 三畳紀後期 | ジュラ紀前期 | ジュラ紀後期 | 白亜紀前期 | 白亜紀後期 | |
| 新生代 | 古第三紀 | 新第三紀 | 第四紀 | ||||
| 現在 | 現在 | ||||||
| 未来 | 500万年後 | 5000万年後 | 1億年後 | 2億年後 |
トップページ(top page)> 中生代・白亜紀前期の世界(The world of Early Cretaceous)