Pachycetus
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Pachycetus is an extinct genus of pachycetine basilosaurid from Middle Eocene of the eastern United States and Europe. The best known remains generally suggest that Pachycetus lived during the Bartoni
The name Pachycetus was coined by Pierre-Joseph van Beneden, though his work was largely overlooked in the following century.
Pachycetus wardii was described based on assorted cranial and postcranial remains including parts of the innominate.
A lumbar vertebrae of Eocetus wardii with the "pockmarks" highlighted by arrows.
Due to its dense skeleton Pachycetus is at times compared to modern sirenians like the dugong.
Zygorhiza
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Zygorhiza is an extinct genus of basilosaurid early whale known from the Late Eocene of Louisiana, Alabama, and Mississippi, United States, and the Bartonian to the late Eocene of New Zealand. Specime
Zygorhiza kochii skull at the North Carolina Museum of Natural Sciences
Fossil in Teylers Museum, Haarlem