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Shell Coloring Pages

Shell Coloring Pages

An exoskeleton is an alien skeleton that supports and protects an animals body, in adverse to the centralized endoskeleton of, for example, a human. In accepted usage, abounding of the beyond kinds of exoskeletons are accepted as shells.

Mineralised exoskeletons aboriginal appeared in the deposit almanac about 550 actor years ago, and their change is advised by some to accept played a role in the consecutive Cambrian access of animals.

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