Mazocraeidea is an order of flatworms in the subclass Polyopisthocotylea within the class Monogenea.
The species of this order have various structures in the clamps of their posterior attachment organ, including additional sclerites in the Gastrocotylidae and related families. However, these additional sclerites, and even the clamps themselves, are lacking in certain members of the family Protomicrocotylidae.
Families According to PESI:PESI Anthocotylidae Bychowsky, 1957 Axinidae Monticelli, 1903 Chauhaneidae Euzet & Trilles, 1960 Diclidophoridae Fuhrmann, 1928 Diplozoidae Discocotylidae Price, 1936 Gotocotylidae Yamaguti, 1963 Heteraxinidae Unnithan, 1957 Hexostomatidae Price, 1936 Mazocraeidae Price, 1936 Microcotylidae Taschenberg, 1879 Octolabeidae Plectanocotylidae Monticelli, 1903 Protomicrocotylidae Johnston & Tiegs, 1922 Pyragraphoridae Yamaguti, 1963
According to the World Register of Marine Species:WoRMS Allodiscocotylidae Allopyragraphoridae Anchorophoridae Anthocotylidae Axinidae Bychowskicotylidae Chauhaneidae Diclidophoridae Diplozoidae Discocotylidae Gastrocotylidae Gotocotylidae Heteraxinidae Heteromicrocotylidae Hexostomatidae Macrovalvitrematidae Mazocraeidae Megamicrocotylidae Microcotylidae Monaxinoididae Neothoracocotylidae Octolabeidae Paramonaxinidae Plectanocotylidae Protomicrocotylidae Pseudodiclidophoridae Pterinotrematidae Pyragraphoridae Thoracocotylidae
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