Schulze, Anja Department of Marine Biology, Texas A&M University, Galveston, Texas.
Last reviewed:June 2020
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A taxon of unsegmented marine worms, commonly known as peanut worms or star worms. The taxon Sipuncula includes 16 genera, 6 families, and approximately 150 recognized species (Fig. 1) that inhabit a wide variety of benthic marine habitats. The exact taxonomic position of the members of the Sipuncula (sipunculans) has been problematic, but these worms probably belong to the phylum Annelida, despite a lack of body segmentation. See also: Annelida; Deep-sea fauna; Invertebrate phylogeny
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