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Enoplea
Enoplea (enopleans) is a class, which with the classes Secernentea〔Tree of Life Web Project (ToL) (2002): (Nematoda ). Version of January 1, 2002. Retrieved November 2, 2008.〕 and Chromadorea make up the phylum Nematoda in current taxonomy.〔(Phylum Nematoda. ) Nemaplex: Nematode-Plant Expert Information System. University of California, Davis. Version October 4, 2012.〕 Enoplea is considered to be a more ancestral group than Chromadorea, and researchers have referred to its members as the "ancestrally diverged nematodes", compared to the "more recently diverged nematodes" of Chromadorea. ==Description== Enoplea are distinguished from Chromadorea by a number of characteristics. The enoplean esophagus is cylindrical or "bottle-shaped", compared to the bulbous chromadorean esophagus. Enopleans have pocket-like amphids, while chromadoreans have amphids shaped like slits, pores, coils, or spirals. An enoplean is smooth or marked with fine lines, while a chromadorean may have rings, projections, or setae. The enoplean excretory system is simple, sometimes made up of a single cell, while chromadoreans have more complex, tubular systems, sometimes with glands.〔(Class Enoplea. ) Nemaplex: Nematode-Plant Expert Information System. University of California, Davis. Version October 9, 2012.〕〔(Class Chromadorea. ) Nemaplex: Nematode-Plant Expert Information System. University of California, Davis. Version October 4, 2012.〕
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