INVERTEBRATE ZOOLOGY - H. I. Shcherbak - 2008

KINGDOM MULTICELLULAR ANIMALS (METAZOA)

SUBKINGDOM TRUE MULTICELLULAR ANIMALS (EUMETAZOA)

DIVISION TRIPLOBLASTIC (TRIPLOBLASTICA) OR BILATERAL (BILATERIA) ANIMALS

SUBDIVISION SPIRALIA (SPIRALIA)

PHYLUM FLATWORMS (PLATHELMINTHES)

SUBPHYLUM NEODERMATA (NEODERMATA)

SUPERCLASS CERCOMEROMORPHA (CERCOMEROMORPHA)

A group of classes characterized by the presence of a larval tail appendage, the cercomer, armed with chitinoid hooks. In monogeneans, the cercomer transforms into a fixation organ—the attachment disc—in adults; in gyrocotylids and amphilinids, only the larval hooks persist from the cercomer in adult animals, whereas in adult tapeworms, all traces of the cercomer disappear completely.



Last update: 13/08/2026

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