Silurian period – Fish get jaws
Silurian period: Trout swimming When was the Silurian period? The beginning of the Silurian period was about 443 million years ago. Some environmental problem at the end of the Ordovician [...]
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Quaternary period – modern times
The Quaternary Period includes today - big cities and all When was the Quaternary Period? The Quaternary period began about 1.8 million years ago (1,800,000 years ago), coming after the [...]
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Permian period – Reptiles and pine trees
Crocodiles About 290 million years ago, the Carboniferous period ended and the Permian period began. Almost all of the land on Earth grouped together in one big supercontinent we call [...]
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Devonian Period – fish, lungfish
Coelocanth: a fish from the Devonian period When was the Devonian period? Four hundred and sixteen million years ago, when the Silurian period ended and the Devonian period began, most [...]
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What happened in the Cambrian Period?
Mossy rocks The Cambrian gets started At the beginning of the Cambrian Period, about 542 million years ago, there were sea creatures like hydras, jellyfish, sponges and seaweed living in [...]
