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Physeter is a genus of toothed whales. There is only one living species in this genus: the sperm whale (Physeter macrocephalus). Some extremely poorly known fossil species have also been assigned to the same genus including Physeter antiquus (5.3-2.6 mya) from the Pliocene of France, and Physeter vetus (2.6 mya - 12 ka) from the Quaternary

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