pelagosphera

pelagosphera
n. [Gr. pelagos, open sea; sphaira, ball]
(SIPUNCULA)
The second larval stage, characterized by a terminal organ for temporary attachment to the substratum, a band of metatrochal swimming cilia, and a retractable anterior body.

Online Dictionary of Invertebrate Zoology. . 2005.

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Look at other dictionaries:

  • Sipuncula — Taxobox name = Sipuncula fossil range = Cambrian Recent regnum = Animalia subregnum = Metazoa superphylum = Lophotrochozoa phylum = Sipuncula phylum authority = Rafinesque, 1814 subdivision ranks = Classes, Orders and Families subdivision =… …   Wikipedia

  • glandular organ — (SIPUNCULA) A prominent structure on the ventral, median part of the oral disc of pelagosphera larvae; lip gland …   Dictionary of invertebrate zoology

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