Palaeos:		Cnidaria
Cnidaria		Cnidaria

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Cnidaria

METAZOA
|--PORIFERA (paraphyletic?)
`--Radiata
   |--Ctenophora
   `--+--Cnidaria  
      |  |--Anthozoa
      |  `--+--Hydrozoa
      |     `--+--+--Scyphozoa
      |        |  `--Cubozoa
      |        `--Conulata
      `--Bilateria
         |--DEUTEROSTOMIA  
         `--PROTOSTOMIA
            |--Ecdysozoa
            `--Lophotrochozoa

The Cnidaria
Symmetry
Body Form
The deadly Nematocysts
Evolutionary history
Classification
Links

Ptilosarcus gurneyi
A close-up of the Orange Sea Pen
Class Anthozoa - Subclass Octocorallia - Order Pennatulacea - Suborder Subselliflorae - Family Pennatulidae

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Text by M. Alan Kazlev (Creative Commons Attribution)
page uploaded 16 June 2002, last modified 2 May 2003
(originally uploaded on Kheper Site 3 June 1999)
checked ATW060205