Trilobite activity

Description

Trilobites lived during the Precambrian Period-Permian Period, 540-245 Million years ago. They were creatures that lived in oceans and seas; they crawled along the bottom and some types could swim. Different trilobite species were different sizes--some of the smallest were only 1 cm long and the largest were 70 cm or longer. Trilobites lived on earth for roughly 300 million years. They are related to crustaceans, spiders, and other insects that are alive today. The name trilobite comes from the fact that their bodies can be divided into three axial (long direction) sections.