That fossil was a jaw belonging to what’s now called a Squalodontid, and it included three sharp, serrated teeth. Squalodontidae, which had been about 10 feet lengthy (three meters), are also known as «shark-toothed dolphins,» and their teeth are really menacing. Trendy dolphin teeth are nonthreatening little bumps which have the same shape from the entrance to the back of the jaw. Squalodontidae, nevertheless, had large, curved, sharp fangs in front and serrated, triangular cheek teeth for slicing their prey up into manageable chunks.

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