Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Phylum: Acanthocephala
Classis: Palaeacanthocephala
Ordo: Polymorphida
Familiae (3): Centrorhynchidae - Plagiorhynchidae - Polymorphidae
[source: Catalogue of Life: 2011 Annual Checklist]
Vernacular names
日本語: ポリモルフス目
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]
Centrorhynchidae Van Cleave, 1916
Isthomosacanthidae Smales, 2012
Plagiorhynchidae Meyer, 1931
Pyriprobosicidae
Polymorphidae Meyer, 1931
References
https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=197470
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.
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