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nydus/A Short History of the WorldPublic
Page 44 of 773
Table of Contents

IV THE AGE OF FISHES

SHARKS AND GANOIDS OF THE DEVONIAN PERIOD
SHARKS AND GANOIDS OF THE DEVONIAN PERIOD By Alice Woodward

These fishes increase greatly in the next division of rocks, the rocks known as the Devonian system. They are so prevalent that this period of

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