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Dugesia subtentaculata
Scientific classification
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Turbellaria
Order: Seriata
Breslau, 1928-33


The Seriata are an order of turbellarian flatworms.[1][2]

They are found in both freshwater and marine environments, and also include a number of species found in damp terrestrial conditions. Most are free-living, but the group includes the genus Bdelloura, which lives comensally on the gills of horseshoe crabs. Seriatans are distinguished from other related groups by the presence of a folded pharynx and of a number of diverticula arising from the intestine. The intestine itself may be either simple or branched.[3]


  1. Artois, T World Register of Marine Species. URL accessed on 11/03/2010.
  2. Turbellarian Taxonomic Database. URL accessed on 11/03/2010.
  3. Barnes, Robert D. (1982). Invertebrate Zoology, Philadelphia, PA: Holt-Saunders International.

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