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NationMaster - Encyclopedia: Animal (Site not responding. Last check: ) |
 | | The Sipuncula, sipunculid worms or peanut worms, are a phylum of marine worms with a tentacle surrounded mouth on a completely invertible head end. |
 | | Orders Anopla Enopla The phylum Nemertea (also Nemertina, Nemertinea or Nemertini) contains the ribbon worms or proboscis worms, which are a group of unsegmented marine invertebrates. |
 | | Genera Phoronis Phoronopsis Phoronids (Phoronida) are a relatively small animal phylum: twelve species are known, in two genera, Phoronis and Phoronopsis. |
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