Key to Class Anthozoa

Taken primarily from  Kozloff, 1987, 1996
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1a	Polyps with 8 pinnately branched tentacles	Subclass  Alcyonaria (Octocorallia)
1b	Polyps with more than 8 tentacles, these not branched	2
2a	With a ring of tentacles around the mouth, as well as on the marginal portion of the disk; inhabiting tubes that consist of discharged nematocysts embedded in a matrix of slippery mucus	Subclass Ceriantipatharia, Order Ceriantharia
2b	Without a ring of tentacles around the mouth (all tentacles are on the marginal portion of the disk); not inhabiting tubes that consist of discharged nematocysts embedded in slippery mucus (true anemones and corals)	Subclass Zoantharia