单词 | sipunculan |
释义 | sipunculan, n. and a.|saɪˈpʌŋkjʊlən| [f. mod.L. name of phylum Sipuncula: see sipunculid.] a. n. A burrowing unsegmented worm of the phylum Sipuncula, found in sandy littoral regions. b. adj. Of or pertaining to a worm of this kind or the group as a whole.
1975Nature 30 Oct. 818/2 There is convincing evidence that myohaemerythrin, a monomeric protein found in the retractor muscles of the sipunculan worm Themiste pyroides, and the protomers of haemerythrin have quite similar tertiary structures. 1977P. E. Gibbs Brit. Sipunculans 7 Whilst sipunculans show clear embryological affinites with the Annelida, it is now generally agreed that..they are best regarded as a distinct and separate phylum. |

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