• Webster's Revised Unabridged Dictionary
    • n. pl Enaliosauria (Paleon) An extinct group of marine reptiles, embracing both the Ichthyosauria and the Plesiosauria, now regarded as distinct orders.
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Century Dictionary and Cyclopedia
    • enaliosauria A superordinal group of gigantic aquatic Mesozoic reptiles, with a very long body, naked leathery skin, paddle-like limbs, numerous teeth in long jaws, and biconcave vertebræ. The group contained the ichthyosaurians, plesiosaurians, and other marine monsters now placed in different orders. The term is now little used; it sometimes, however, still covers the two current orders Ichthyosauria and Plesiosauria, or Ichthyopterygia and Sauropterygia.
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Webster's Revised Unabridged Dictionary
NL., from Gr. marine ( in + the sea) + a lizard