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Vertebrata   Listen
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

... seems to be the first formation of the limbs of the higher animals. The lowest Vertebrata[34] are perfectly limbless, and if, as most Darwinians would probably assume, the primeval vertebrate creature was also apodal, how are the preservation and development of the first rudiments of limbs to be accounted for—such rudiments ...
— On the Genesis of Species • St. George Mivart

... this question, and propounded the theory that the skull was neither more nor less than the modified foremost end of the vertebral column, and that the separate groups of bones which lie behind one another in the human skull, as in that of all the higher vertebrata, answer to the separate modified vertebrae. This "vertebral theory" of the skull, which Von Goethe and Oken simultaneously and independently attempted to prove, aroused universal interest and maintained its ground ...
— Freedom in Science and Teaching. - from the German of Ernst Haeckel • Ernst Haeckel

... hints we have determined to venture upon, though we do so with the profoundest diffidence. Firstly, we would remark that as some of the lowest of the vertebrata attained a far greater size than has descended to their more highly organised living representatives, so a diminution in the size of machines has often attended their development and progress. Take the watch for instance. Examine the beautiful structure of the little ...
— Samuel Butler's Canterbury Pieces • Samuel Butler

... the question, whether the succession of life upon the globe has been from a lower to a higher degree of organization. The admitted facts seem to show that there has been a general, but not a detailed progression. Mollusca and Radiata existed before Vertebrata, and the progression from Fishes to Reptiles and Mammalia, and also from the lower mammals to the higher, is indisputable. On the other hand, it is said that the Mollusca and Radiata of the very earliest periods were more highly organized than the great mass ...
— Contributions to the Theory of Natural Selection - A Series of Essays • Alfred Russel Wallace

... particulars. The beginnings of the vertebrate order would show themselves simultaneously, or at any rate independently, in many places wherever external conditions were sufficiently similar. And the unity of the plan in the vertebrata would be due, not to absolute unity of ancestry, but to unity of external conditions at a particular epoch in the descent of life. Hence it follows that the separation of animals into orders and genera and even into species took place, if not for the most part yet very largely, at a ...
— The Relations Between Religion and Science - Eight Lectures Preached Before the University of Oxford in the Year 1884 • Frederick, Lord Bishop of Exeter

... first to drop a word of caution against "inferring too hastily from the absence of mammalian fossils in the older rocks that the higher class of vertebrata did not exist in those remote times." "The remains of vertebrate animals are already found in the lowest fossiliferous rocks, and, in addition to that, the highest forms of ...
— The Christian Foundation, Or, Scientific and Religious Journal, Volume I, No. 7, July, 1880 • Various

... things from the data of the present. At this stage the following facts may perhaps stimulate your imagination. There can be no doubt that many of the Arthropods, a division of animals more ancient and even now more prevalent than the Vertebrata, have undergone more phylogenetic modification"—a beautiful phrase—"than even the most modified of vertebrated animals. Simple forms like the lobsters display a primitive structure parallel with that of the fishes. However, in such a form as the degraded 'Chondracanthus,' the structure has ...
— Certain Personal Matters • H. G. Wells

... Lower-level Valley-gravels. Loess or Inundation-mud of the Nile, Rhine, etc. Origin of Caverns. Remains of Man and extinct Quadrupeds in Cavern Deposits. Cave of Kirkdale. Australian Cave-breccias. Geographical Relationship of the Provinces of living Vertebrata and those of extinct Post-pliocene Species. Extinct struthious Birds of New Zealand. Climate of the Post-pliocene Period. Comparative Longevity of Species in the Mammalia and Testacea. Teeth of Recent and ...
— The Student's Elements of Geology • Sir Charles Lyell

... have evidence of such a unity of plan among all the animals which have backbones, and which we technically call "Vertebrata". But there are multitudes of other animals, such as crabs, lobsters, spiders, and so on, which we term "Annulosa". In these I could not point out to you the parts that correspond with those of the Horse,—the ...
— Lectures and Essays • T.H. Huxley

... is very different. Of course, as in the Vertebrata generally, we find in the Bat's fore-limb the same three main sections as in birds; and as the function of the limb is the same, and a certain stiffness is necessary in the extended organ, the movements ...
— A Book of Natural History - Young Folks' Library Volume XIV. • Various

Words linked to "Vertebrata" :   Gnathostomata, amphibian genus, superclass Gnathostomata, class Aves, phylum Chordata, subphylum Craniata, Amniota, amphibia, class Channidae, Aves, mammal family, reptile genus, fish family, class Reptilia, class Mammalia, Agnatha, subphylum Vertebrata, amphibian family, class Chondrichthyes, bird genus, fish genus, bird family, Reptilia, Placodermi, reptile family, superclass Agnatha, class Amphibia, class Placodermi, craniate, Craniata, class Osteichthyes, Chordata, Mammalia, vertebrate, phylum, mammal genus, Pisces, Channidae

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