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Prosqualodon is an extinct genus of cetacean.

Prosqualodon was related to and looked like modern toothed whales. It was about 2.3 metres (7.5 ft) long and resembled a dolphin. It had long jaws with interlocking teeth that jutted to the outside, remaining visible when the jaws were closed, like those of a gharial.[1]

In the back of the mouth it had triangular teeth similar to those of earlier cetaceans, but in most other respects, it was relatively advanced. It had developed the body form of modern whales, with a short neck and simple jaw structure, and like modern cetaceans, it also had a blowhole. The olfactory apparatus was reduced compared with earlier forms, suggesting that it had already lost much of its sense of smell, presumably relying on sound to catch its prey.

SpeciesEdit

  • Prosqualodon australis Lydekker, 1894 (type); from the early Miocene (Aquitanian) of Argentina[2]
  • Prosqualodon davidis Flynn, 1923; from the early Miocene (Aquitanian) of Tasmania, Australia[3]
  • Prosqualodon hamiltoni Benham, 1937; from the late Oligocene (Chattian) of New Zealand;[4] appears to represent distinct genus.[5]

The nominal species "Prosqualodon" marplesi Dickson, 1964,[6] later treated as a species of the squalodelphinid Notocetus,[7] has been reclassified as a relative of Waipatia and given the new generic name Otekaikea.

ReferencesEdit

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