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Morphology Ecology and taphonomy   Age range and collections


Anthozoa - Heliolitida - Halysitidae

Hexismia was named by Sokolov (1955) [Sepkoski's age data: S Ldov S Wenl]. It is not extant.

It was assigned to Halysitinae by Hill (1981); and to Tabulata by Sepkoski (2002).

Synonymy list
YearName and author
1955Hexismia Sokolov
1981Hexismia Hill
2002Hexismia Sepkoski, Jr.

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phylumCnidariaHatschek 1888
classAnthozoaEhrenberg 1834
subclassTabulataMilne-Edwards and Haime 1850
orderHeliolitidaFrech 1897
suborderHalysitinaSokolov 1947
familyHalysitidaeMilne-Edwards and Haime 1849
subfamilyHalysitinaeMilne-Edwards and Haime 1849
genusHexismiaSokolov 1955

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

No diagnoses are available