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A phylum of bilaterally symmetrical, nonsegmented, ribbonlike worms, also referred to as the Nemertinea or Rhynchocoela. With one exception (the...



= Encyclopedia Article; = Research Update
Figure 1.Tubulanus capistratus from the Pacific coast; size ranges up to nearly 1 m (3.3 ft) in length. (After L. H. Hyman, The Invertebrates, vol. 2, McGraw-Hill, New York, 1951)
From Encyclopedia article 'Nemertea'
Figure 2.Stylets of Amphiporus griseus. (After W. R. Coe, Biology of the nemerteans of the Atlantic coast of North America, Trans. Conn. Acad. Arts Sci., 35:282, 1943)
From Encyclopedia article 'Nemertea'
Figure 3.Schematic generalized diagram of the internal structure of a nemertean.
From Encyclopedia article 'Nemertea'