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Lamna

Lamna Obliqua was one of the earliest mackerel sharks. Their teeth are noted for their wide triangular crown and large side cusps (occasionally multiple side cusps).

This shark, is thought to be one of the earliest "giant" sharks. It may be the ancestor of most, if not all, living "Mackerel Sharks." The term "Mackerel Shark" refers to a type of shark, one with a particular body shape (like a fish - "Mackerel") and lifestyle (lives in the open water).