Cephalodiscida

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Cephalodiscida
Cephalodiscus dodecalophus McIntosh.png
Cephalodiscus dodecalophus
Scientific classification
Kingdom:
Phylum:
Class:
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[edit]

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[edit]

  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