| 释义 |
Chordata, n. pl. Zool.|kɔːˈdeɪtə|
[mod.L., f. L. chorda chord n.1, with termination as in vertebrata, etc.]
A phylum of animals having a more or less well-developed notochord at some stage in their lives.
1880F. M. Balfour Treat. Compar. Embryol. I. 4 The larva of the Tunicata has the characters of a simple type of the Chordata. 1901Shipley & MacBride Zool. xiii. 291 The name Chordata, which has been proposed for the group, is really more appropriate. 1906Chamberlin & Salisbury Geol. II. 484 While perhaps they should remain under the broad mantle of the term Chordata, they must apparently be removed from the true vertebrates to a new class. 1950J. Z. Young Life of Vertebrates ii. 24 The Chordata occupy a greater variety of habitats..than any other group. 1957M. Abercrombie et al. Dict. Biol. 50 Chordata, phylum of animals with notochord, hollow dorsal nerve cord, and gil slits. Includes subphyla Vertebrata (Craniata) and Protochordata. |