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Anthozoa - Stauriida - Streptelasmatidae

Xenocyathellus was named by Bassler (1937) [Sepkoski's age data: D Give-l]. It is not extant.

It was assigned to Paleocyclidae by Bassler (1937); to Hadrophyllidae by Hill (1956); to Homalophyllinae by Hill (1981); and to Rugosa by Sepkoski (2002).

Synonymy list
YearName and author
1937Xenocyathellus Bassler
1956Xenocyathellus Hill
1981Xenocyathellus Hill
2002Xenocyathellus Sepkoski, Jr.

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phylumCnidariaHatschek 1888
classAnthozoaEhrenberg 1834
subclassRugosa(Milne-Edwards and Haime 1850)
orderStauriidaVerrill 1865
suborderStreptelasmatinaWedekind 1927
familyStreptelasmatidaeNicholson 1889
subfamilyHomalophyllinaeAltevogt 1965
genusXenocyathellusBassler 1937

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