单词 | cephalodiscus |
释义 | cephalodiscus|ˌsɛfələʊˈdɪskəs| [mod.L. (W. C. M‘Intosh 1882, in Ann. & Mag. Nat. Hist. 5th Ser. X. 337), f. Gr. κεϕαλή head (see cephalo-) + δίσκος disc.] A member of the genus so named of primitive deep-sea chordates of the class Pterobranchia.
1882M'Intosh in Ann. & Mag. Nat. Hist. X. 343 Cephalodiscus also diverges in regard to the thin postoral lamella. 1885Encycl. Brit. XIX. 435/1 The dwelling of Cephalodiscus is a gelatinous, irregularly branched, and fimbriated mass. 1915E. R. Lankester Divers. Naturalist 8 One of the most interesting deep-sea creatures discovered by the ‘Challenger’..received the name Cephalodiscus. 1955N. J. Berrill Orig. Vertebrates xi. 117 Cephalodiscus, Rhabdopleura, and balanoglossids seem never to have become completely sessile forms. |

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