Skip to main content
padlock icon - secure page this page is secure

Systematics of the Hexacorallia (Cnidaria: Anthozoa)

Buy Article:

$43.00 + tax (Refund Policy)

The composition of and relationships among higher-level groups within the anthozoan subclass Hexacorallia (= Zoantharia) has been controversial because independent analyses of anatomy, life history, ultrastructure, and molecular sequences have failed to provide a consistent framework for drawing taxonomic boundaries or understanding phylogenetic relationships. The relationship among stony corals (order Scleractinia), sea anemones (order Actiniaria), and corallimorpharians (order Corallimorpharia) has been particularly problematic. We synthesize existing studies and provide new anatomical and molecular evidence that bear on the question of ordinal circumscription and relationships. We find that orders Actiniaria, Antipatharia, Ceriantharia, Corallimorpharia, Scleractinia, and Zoanthidea are monophyletic; Corallimorpharia is most closely related to Scleractinia. We infer that many traditional diagnostic characters are shared primitive features and thus poor indicators of phylogenetic relationships. Although the major nodes of the hexacorallian tree are well supported by multiple types of data, questions about skeletal evolution and subordinal taxonomy remain unanswered pending denser taxonomic and character sampling. © 2003 The Linnean Society of London, Zoological Journal of the Linnean Society, 2003, 139, 419–437.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: Actiniaria; Anthozoa; Cnidaria; Scleractinia; combined data; evolution; systematics

Document Type: Research Article

Affiliations: Department of Ecology and Evolutionary Biology, University of Kansas and Division of Invertebrate Zoology, University of Kansas Natural History Museum and Biodiversity Research Center, Lawrence KS 66045, USA

Publication date: 01 November 2003

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more