• Science: Biology: Flora and Fauna: Animalia: Acoelomates  (2)

• Animalia - Gnathostomulida - Diagram of a representative body plan of a gnathostomulid.
• Phylum Gnathostomulida - Images of some members of this taxonomic group.
• The Sand Worms (Phylum Gnathostomula) - Description of the tiny marine worms in this phylum and the characteristics that distinguish them from other worms.
• The Taxonomicon: Phylum Gnathostomulida - List of published resources on the taxonomy of this phylum.

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