1 Jan 400000000 Jahr v. Chr. - Early Devonian Era: Shark Evolution Begins

Beschreibung:

About 50 millions years of after the SIlurian Era, the Devonian Era began. This is when the very first, fully developed shark, the Leonodus Shark, evolved. Very little is known about the leonodus shark. However, the fossil remains of its two-pronged teeth lead scientists to believe that it was about 16 inches long, with an eel-like body and lived in freshwater.

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