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Updated: May 8, 2025
These changes are reflected in the progress of marine life, though their influence is probably less than that of the great carnivorous monsters which now fill the waters. The heavy Arthrodirans languish and disappear.
But the Arthrodirans were unwieldy and sluggish, and had to give way before more progressive types. The toothed shark gradually became the lord of the waters. The early shark ate, amongst other things, quantities of Molluscs and Brachiopods.
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