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Short description: Order of thorny-headed worms

C wegeneri.JPG
Corynosoma wegeneri
Scientific classification e
Kingdom: Animalia
Phylum: Acanthocephala
Class: Palaeacanthocephala
Order: Polymorphida
Petrochenko, 1956

Polymorphida are an order of thorny-headed worms (phylum Acanthocephala). The adults of these parasitic platyzoans feed mainly on fish and aquatic birds.

This order contains 5 families:[1][2]


  2. Huston, D. C., Cribb, T. H., & Smales, L. R. (2020). Molecular characterisation of acanthocephalans from Australian marine teleosts: proposal of a new family, synonymy of another and transfer of taxa between orders. Systematic Parasitology, 1-23.

See also Wikidata entry Q2544965.