Maricola

The Maricola group was first proposed by Hallez in 1892. He recognized three families: Otoplanida, Procerodida and Bdellourida.[2] Two years later, in 1884, Hallez renamed these families as Otoplanidae, Procerodidae and Bdellouridae.[3] In 1906 Böhmig classified the Maricola in two families and five subfamilies: Procerodidae (Euprocerodinae, Cercyrinae, Micropharynginae) and Bdellouridae (Uteriporinae, Eubdellourinae). In 1909 Wilhelmi wrote a monograph on the group in which five families were described: Procerodidae, Uteriporidae, Cercyridae, Bdellouridae, Micropharyngidae.[4] Von Graff used the same classification in 1916.[5] In 1989 Sluys recognized the six present families on the basis of phylogenetic analyses of the whole group.[6]

Taxonomical classification after Sluys et al. 2009:[7]

• Order Tricladida
  • Suborder Maricola
    • Superfamily Cercyroidea
      • Family Centrovarioplanidae
      • Family Cercyridae
      • Family Meixnerididae
    • Superfamily Bdellouroidea
      • Family Uteriporidae
      • Family Bdellouridae
    • Superfamily Procerodoidea
      • Family Procerodidae
    • Superfamily incerta sedis
      • Genus Micropharynx
      • Genus Tiddles

Phylogenetic supertree after Sluys et al., 2009:[7]