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Helenia

Hyolithida - Hyolithidae

Taxonomy
Helenia was named by Walcott (1889) [Sepkoski's age data: Cm Atda-u Cm Boto Sepkoski's reference number: 1006].

It was assigned to Hyolithidae by Fisher (1962); and to Hyolithida by Sepkoski (2002).

Synonymy list
YearName and author
1889Helenia Walcott p. 39
1962Helenia Fisher p. 124
2002Helenia Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
RankNameAuthor
Lophophorata
phylumHyolitha
orderHyolithidaMathew 1962
familyHyolithidaeNicholson 1889
genusHeleniaWalcott 1889

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.

Diagnosis
No diagnoses are available