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Amphibia   Listen
noun
Amphibia  n. pl.  (Zool.) One of the classes of vertebrates. Note: The Amphibia are distinguished by having usually no scales, by having eggs and embryos similar to those of fishes, and by undergoing a complete metamorphosis, the young having gills. There are three living orders: (1) The tailless, as the frogs (Anura); (2) The tailed (Urodela), as the salamanders, and the siren group (Sirenoidea), which retain the gills of the young state (hence called Perennibranchiata) through the adult state, among which are the siren, proteus, etc.; (3) The Coecilians, or serpentlike Amphibia (Ophiomorpha or Gymnophiona), with minute scales and without limbs. The extinct Labyrinthodonts also belonged to this class. The term is sometimes loosely applied to both reptiles and amphibians collectively.






Collaborative International Dictionary of English 0.48








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"Amphibia" Quotes from Famous Books



... to be a happy mixture of a lark, pigeon and snipe (No. 710). Mr. MacLeay himself never imagined such an inosculating creature: I suppose it will turn out to be some well-known bird, although it has quite baffled me. I have taken some interesting Amphibia; a new Trigonocephalus beautifully connecting in its habits Crotalus and the Viperidae, and plenty of new (as far as my knowledge goes) saurians. As for one little toad, I hope it may be new, that it may be christened "diabolicus." ...
— More Letters of Charles Darwin - Volume I (of II) • Charles Darwin

... to have been hermaphrodite or androgynous. (26. This is the conclusion of Prof. Gegenbaur, one of the highest authorities in comparative anatomy: see 'Grundzuge der vergleich. Anat.' 1870, s. 876. The result has been arrived at chiefly from the study of the Amphibia; but it appears from the researches of Waldeyer (as quoted in 'Journal of Anat. and Phys.' 1869, p. 161), that the sexual organs of even "the higher vertebrata are, in their early condition, hermaphrodite." ...
— The Descent of Man and Selection in Relation to Sex • Charles Darwin

... regarded as an embryological character in ancient fishes; what might be regarded as such was the absence of a bony sheath to the end of the "chorda" found in the more developed fishes. Further traces of this bony structure were shown to exist, among other piscine resemblances, in the Amphibia. Finally the embryological facts now observed in the development of the bones of the skull were of great importance,] "as they enable us to understand, on the one hand, the different modifications of the palato-suspensorial apparatus in fishes, and on the other hand the relations ...
— The Life and Letters of Thomas Henry Huxley Volume 1 • Leonard Huxley

... animal world. The feathered inhabitants of the woods are struck dumb, and flutter about in dismay on the ground; myriads of insects seek shelter under leaves and trunks of trees. The wild Mammalia are tamed, and suspend their work of war and carnage; the cold-blooded Amphibia alone rejoice in the overwhelming deluge, and millions of snakes and frogs, which swarm in the flooded meadows, raise a chorus of hissing and croaking. Streams of muddy water flow through the narrow paths of ...
— The Mirror of Literature, Amusement, and Instruction, Vol. 19, No. - 537, March 10, 1832 • Various



Words linked to "Amphibia" :   Labyrinthodonta, genus Ichthyostega, Stegocephalia, order Caudata, Anura, class, order Stegocephalia, subphylum Vertebrata, Craniata, amphibian, tadpole, amphibious, Salientia, order Salientia, order Gymnophiona, polliwog, Rorippa amphibia



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