Palaeacanthocephala
| Palaeacanthocephala | |
|---|---|
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| Proboscis of a Rhadinorhynchus species | |
| Scientific classification | |
| Kingdom: | Animalia |
| Subkingdom: | Eumetazoa |
| (unranked): | Bilateria |
| Superphylum: | Platyzoa |
| Phylum: | Acanthocephala |
| Class: | Palaeacanthocephala A.Meyer, 1931 |
| Orders | |
Two paleoacanthocephalans, Heterosentis mongcai Amin, Heckmann & Ha, 2014 and Filisoma indicum Van Cleave, 1928
Palaeacanthocephala ("ancient thornheads") is a class within the phylum Acanthocephala. The adults of these parasitic platyzoans feed mainly on fish, aquatic birds and mammals.
The nuclei of the hypodermis (outer layer of skin) are fragmented and the males have two to seven cement glands, unlike their relatives the Archiacanthocephala which always have eight.
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