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Vertebrata   Listen
noun
Vertebrata  n. pl.  (Zool.) One of the grand divisions of the animal kingdom, comprising all animals that have a backbone composed of bony or cartilaginous vertebrae, together with Amphioxus in which the backbone is represented by a simple undivided notochord. The Vertebrata always have a dorsal, or neural, cavity above the notochord or backbone, and a ventral, or visceral, cavity below it. The subdivisions or classes of Vertebrata are Mammalia, Aves, Reptilia, Amphibia, Pisces, Marsipobranchia, and Leptocardia.






Collaborative International Dictionary of English 0.48








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"Vertebrata" Quotes from Famous Books



... anticipates the work of subsequent investigators, and which, for the most part, represents fresh studies of special groups of animals to be used in a general classification such as was suggested in his paper "On the Application of the Laws of Evolution to the arrangement of the Vertebrata, and more particularly of the Mammalia" (1880)—"the most masterly," remarks Professor Howes, "of his scientific theses; the only expression which he gave to the world of the interaction of a series of revolutionary ideas ...
— Thomas Henry Huxley - A Character Sketch • Leonard Huxley

... restricted himself to Birds, A. Desmoulins in 1822 wrote a short but most suggestive paper on the Vertebrata, omitting the birds; he combated the view recently proposed by the entomologist Latreille that temperature was the main factor in distribution. Some of his ten main conclusions show a peculiar mixture of evolutionary ideas coupled with the conception of the stability ...
— Darwin and Modern Science • A.C. Seward and Others

... department of practice which he bases upon this anatomical certainty be accounted as rooted in truth and governed by fixed principles. The same organ bears the same special and general relations in all bodies, not only of the human, but of all other species of vertebrata; and from this evidence we conclude that the same marks on surface indicate the exact situation of the same organs in all ...
— Surgical Anatomy • Joseph Maclise

... master existences of the time. The geologic volume in which these great formations are included corresponds to the Cuvierian one devoted to the Reptilia. Early in the Oolitic System, birds, Cuvier's second class of the vertebrata, make their first appearance, though their remains, like those of birds in the present time, are rare and infrequent; and, for at least the earlier periods of their existence, we know that they were,—that they haunted for food the waters ...
— The Testimony of the Rocks - or, Geology in Its Bearings on the Two Theologies, Natural and Revealed • Hugh Miller

... research. This is a living population equivalent to that of a new continent in mere number; equivalent to that of a new hemisphere, if we take into account the small population of insects as yet found fossil, and the large proportion and peculiar organisation of many of the Vertebrata. ...
— Discourses - Biological and Geological Essays • Thomas H. Huxley



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