Paleozoic

【Life of the Cambrian】Trilobites – Eyes With Lenses Made of Calcite Crystal

Prehistoric Life

Earth Timeline Series – Index

【Earth Timeline 04】The Cambrian Period – When the Blueprints of Animal Bodies Came Together

【Earth Timeline 05】The Ordovician Period – Reef-Filled Seas and an Ending Locked in Ice

【Earth Timeline 06】The Silurian Period – When Plants Came Ashore

【Earth Timeline 07】The Devonian Period – How Fins Became Legs

【Earth Timeline 08】The Carboniferous Period – Giant Insects and Oxygen-Rich Forests

【Earth Timeline 09-1】The Permian Period – When the Continents Became One

【Earth Timeline 09-2】The Permian Period – The Greatest Extinction in History