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basilosaurus Syllabification: bas·i·lo·sau·rus
Pronunciation: /ˌbasələˈsôrəs/

Definition of basilosaurus in English:


A large marine cetacean of the Eocene epoch, having a long, slender body and vestigial fore and hind limbs. Fossils were discovered in the early 1990s.
  • Genus Basilosaurus, suborder Archaeoceti, order Cetacea
Example sentences
  • Although Basilosaurus possessed a fluke and peduncle, Buchholtz dismisses these features because they are too short relative to body length.
  • One of these was pictured in the exhibition - the Basilosaurus.
  • In Basilosaurus, nearly all of these structures lay within the body wall, and most parts were immobile.


Modern Latin, from Greek basileus 'king' + sauros 'lizard'.

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