Trichocephalida

The Trichocephalida (Trichinellida or Trichurida in other classifications) is an order of parasitic nematodes.

==Taxonomy== The order Trichocephalida includes, according to modern classifications, the single suborder Trichinellina Hodda, 2007, which itself includes the single superfamily Trichinelloidea Ward, 1907, which itself includes 6 families: Family Anatrichosomatidae Yamaguti, 1961 (1 genus, 5 species) including the single genus Anatrichosoma Family Capillariidae Railliet, 1915 (1 subfamily, 18-22 genera according to classifications, 390 species) including Capillaria Family Cystoopsidae Skrjabin, 1923 (2 subfamilies, 2 genera, 7 species) Family Trichinellidae Ward, 1907 (4 genera, 16 species) including Trichinella Family Trichosomoididae Hall, 1916 (2 subfamilies, 5 genera, 25 species) including Huffmanela Family Trichuridae Ransom, 1911 (1 subfamily, 6 genera, 107 species) including Trichuris