Palaeacanthocephala

      Palaeacanthocephala
      Proboscis of a Rhadinorhynchus species
      Scientific classification
      Kingdom: Animalia
      Subkingdom: Eumetazoa
      (unranked): Bilateria
      Superphylum: Platyzoa
      Phylum: Acanthocephala
      Class: Palaeacanthocephala
      A.Meyer, 1931
      Orders

      Echinorhynchida
      Polymorphida

      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.


      Last modified on 15 March 2013, at 16:47