Sipuncula

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Related to Sipunculida: Sipuncula
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Noun1.Sipuncula - peanut worms
animal kingdom, Animalia, kingdom Animalia - taxonomic kingdom comprising all living or extinct animals
peanut worm, sipunculid - small unsegmented marine worm that when disturbed retracts its anterior portion into the body giving the appearance of a peanut
phylum - (biology) the major taxonomic group of animals and plants; contains classes
References in periodicals archive ?
V: Smaller Coelomate Groups--Chaetognatha, Hemichordata, Pogonophora, Phoronida, Ectoprocta, Brachiopoda, Sipunculida.
The Invertebrates: Smaller Coelomate Groups: Chaetognatha, Hemichordata, Pogonophora, Phoronida, Ectoprocta, Brachipoda, Sipunculida, the Coelomate Bilateria.