Macrodelphinus
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| Macrodelphinus Temporal range:
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| Macrodelphinus and Eurhinodelphis. | |
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| Genus: | Macrodelphinus
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| Species: | M. kelloggi
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Macrodelphinus kelloggi was an orca-sized relative of the cetacean Eurhinodelphis. It lived off the coast of what is now California during the early Miocene. Because of its size, and inch-long teeth, it is believed to have been an apex predator. Macrodelphinus is known from a fragmentary skull from southern California.
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