Ichthyosauria

Definitions

  • WordNet 3.6
    • n Ichthyosauria extinct marine reptiles: ichthyosaurs
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Webster's Revised Unabridged Dictionary
    • n. pl Ichthyosauria (Paleon) An extinct order of marine reptiles, including Ichthyosaurus and allied forms; -- called also Ichthyopterygia. They have not been found later than the Cretaceous period.
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Century Dictionary and Cyclopedia
    • ichthyosauria An order of gigantic extinct marine fish-like Reptilia, having somewhat the shape of a cetacean mammal, with an enormous head, no obvious neck, and a tapering body, with four paddle-like flippers, and probably a fin-like expansion of the caudal region. The vertebræ are very short, biconcave, and peculiar in other respects (see the extract); the spinal column is without a sacrum, and is divisible only into caudal and precaudal regions, the former being distinguished by the presence of chevron-bones, the latter by the presence of ribs which do not articulate with the sternum. The order is the same as the Ichthyopterygia of Owen, but is named more conformably with some other orders of extinct reptiles. Also Ichthyosaura, Ichthyosauri.
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Chambers's Twentieth Century Dictionary
    • n Ichthyosauria ik-thi-o-sawr′i-a an order of gigantic extinct marine reptiles, uniting some of the characteristics of the Saurians with those of fishes
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Etymology

Webster's Revised Unabridged Dictionary
NL. See Ichthyosaurus
Chambers's Twentieth Century Dictionary
Gr. ichthys, a fish, sauros, a lizard.

Usage

In literature:

This, of course, is especially the case as regards the marine Ichthyosauria and Plesiosauria, of which such numbers of remains have been discovered.
"On the Genesis of Species" by St. George Mivart
Fish dragons (Ichthyosauria); 45.
"The History of Creation, Vol. II (of 2)" by Ernst Haeckel
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