| 单词 | lepospondyl |
| 释义 | lepospondyl, n. and a.|lɛpəʊˈspɒndɪl|
[f. mod.L. name of suborder Lepospondyli (K. A. Zittel Handbuch der Palæontologie (1887–90) 1 Abth. III. 348), f. Gr. λέπος husk + σπονδύλος vertebra.]
An extinct amphibian belonging to the suborder Lepospondyli, distinguished by vertebrae shaped like hour-glasses; of or pertaining to an amphibian of this type. Also lepoˈspondylous a.
1901H. Gadow in Cambr. Nat. Hist. VIII. iv. 79 The vertebræ [of Stegocephali] exhibit three types... 1. Lepospondylous and pseudocentrous.—The vertebra consists of a thin shell of bone surrounding the chorda dorsalis. 1902C. R. Eastman tr. Zittel's Text-bk. Palaeontol. II. 118 (caption) Lepospondylous vertebrae of Hylonomus. 1933A. S. Romer Vertebr. Paleontol. v. 112 In the lepospondyls the vertebral centrum was a single hollow spool-shaped ossification. Ibid., The divergence of the various lepospondyl groups must have taken place at an extremely early date. 1958C. K. Weichert Anat. Chordates (ed. 2) xix. 850 Stegocephalia... Fossil forms: labyrinthodonts, lepospondyls, and phyllospondyls, varying primarily in structure of vertebral column. 1971E. C. Olson Vertebr. Paleozool. vii. 296 (caption) A lepospondyl (microsaur) skull. Ibid. 297 Like the other lepospondyls they [sc. Lysorophus and its relatives] are highly specialized. |
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