Saturday 21 December 2013

Trilobites were the most numerous arthropods

The word “trilobite” means “three parts”. It was given to creatures such as Conocoryphe because the body is always divided into three parts, a head, a body and a tail. Trilobites first lived about 550 million years ago and by 500 million years ago were among the most numerous animals.

From "100 Things to knowa bout Prehistoric Life" by Rupert Matthews

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http://www.amazon.co.uk/Prehistoric-Life-Facts-Steve-Parker/dp/1842369741/ref=sr_1_1?ie=UTF8&qid=1387617657&sr=8-1&keywords=prehistoric+life+rupert+matthews

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