Definition of vertebra

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Vertebra (n.) One of the serial segments of the spinal column.

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Zoochlorella :: Zoochlorella (n.) One of the small green granulelike bodies found in the interior of certain stentors, hydras, and other invertebrates..
Chelonia :: Chelonia (n. pl.) An order of reptiles, including the tortoises and turtles, peculiar in having a part of the vertebrae, ribs, and sternum united with the dermal plates so as to form a firm shell. The jaws are covered by a horny beak. See Reptilia; also, Illust. in Appendix..
Isospondylous :: Isospondylous (a.) Of or pertaining to the Isospondyli; having the anterior vertebrae separate and normal.
Spermatheca :: Spermatheca (n.) A small sac connected with the female reproductive organs of insects and many other invertebrates, serving to receive and retain the spermatozoa..
Pisces :: Pisces (n. pl.) The class of Vertebrata that includes the fishes. The principal divisions are Elasmobranchii, Ganoidei, and Teleostei..
Perigastric :: Perigastric (a.) Surrounding the stomach; -- applied to the body cavity of Bryozoa and various other Invertebrata.
Neuro-central :: Neuro-central (a.) Between the neural arch and the centrum of a vertebra; as, the neurocentral suture..
Epimere :: Epimere (n.) One of the segments of the transverse axis, or the so called homonymous parts; as, for example, one of the several segments of the extremities in vertebrates, or one of the similar segments in plants, such as the segments of a segmented leaf..
Merosome :: Merosome (n.) One of the serial segments, or metameres, of which the bodies of vertebrate and articulate animals are composed..
Pharyngopneusta :: Pharyngopneusta (n. pl.) A group of invertebrates including the Tunicata and Enteropneusta.
Malacozoa :: Malacozoa (n. pl.) An extensive group of Invertebrata, including the Mollusca, Brachiopoda, and Bryozoa. Called also Malacozoaria..
Intercrural :: Intercrural (a.) Between crura; -- applied especially to the interneural plates in the vertebral column of many cartilaginous fishes.
Retineum :: Retineum (n.) That part of the eye of an invertebrate which corresponds in function with the retina of a vertebrate.
Otozoum :: Otozoum (n.) An extinct genus of huge vertebrates, probably dinosaurs, known only from four-toed tracks in Triassic sandstones..
Pleurocentrum :: Pleurocentrum (n.) One of the lateral elements in the centra of the vertebrae in some fossil batrachians.
Ginglymodi :: Ginglymodi (n.) An order of ganoid fishes, including the modern gar pikes and many allied fossil forms. They have rhombic, ganoid scales, a heterocercal tail, paired fins without an axis, fulcra on the fins, and a bony skeleton, with the vertebrae convex in front and concave behind, forming a ball and socket joint. See Ganoidel..
Subverter :: Subvertebral (a.) Situated beneath, or on the ventral side of, the vertebral column; situated beneath, or inside of, the endoskeleton; hypaxial; hyposkeletal..
Odontornithes :: Odontornithes (n. pl.) A group of Mesozoic birds having the jaws armed with teeth, as in most other vertebrates. They have been divided into three orders: Odontolcae, Odontotormae, and Saururae..
Zygapophysis :: Zygapophysis (n.) One of the articular processes of a vertebra, of which there are usually four, two anterior and two posterior. See under Vertebra..
Allantoidea :: Allantoidea (n. pl.) The division of Vertebrata in which the embryo develops an allantois. It includes reptiles, birds, and mammals..
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