ひろゆら

【Earth Timeline 13-1】The Paleogene Period – A World Where Mammals Filled the Empty Seats

【Earth Timeline 13-2】The Paleogene Period – Abrupt Warming and the Whales That Returned to the Sea

【Earth Timeline 14】The Neogene Period – When the Mediterranean Dried Up

【Earth Timeline 15-1】Cenozoic: The Quaternary – Why the Mammoths Died Out at the End of the Last Ice Age

【Earth Timeline 15-2】The Quaternary Period – When Earth Had Many Human Species

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