Cephalodiscida

Cephalodiscida
Cephalodiscus dodecalophus
Scientific classification
Kingdom: Animalia
Phylum: Hemichordata
Class: Pterobranchia
Order: Cephalodiscida
Families

Atubaridae
Cephalodiscidae

Cephalodiscida is one of two orders in the class Pterobranchia, which are small, worm-shaped animals. Members belong to the hemichordates.[1][2] Species in this order are sessile, living in clear water and secrete tubes on the ocean floor.[3]

Taxonomy

The order is a small one, with only two known families, each containing a single genus. The validity of the family Atubaridae, who has only a sole member, is regarded as a questionable species.[4]

Order Cephalodiscida

References

  1. ↑ animaldiversity.ummz.umich.edu Archived June 29, 2011, at the Wayback Machine.
  2. ↑ Eol.org
  3. ↑ Shipley, A.E. (1902). Zoology: An Elementary Textbook. Cambridge: Cambridge University Press.
  4. ↑ The Global Diversity of Hemichordata

4. Harmer. S. F. 1905. The Pterobranchia ol the Siboga-Expedition. Siboga Exped .Monogr. 26. 1-131


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