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Helmersenia

Lingulata - Siphonotretida - Siphonotretidae

Taxonomy
Helmersenia was named by Pander (1861). It is not extant.

It was assigned to Acanthamboniinae by Popov and Nolvak (1987) and Holmer (1989); to Siphonotretidae by Williams et al. (2000); and to Acrotretida by Sepkoski (2002).

Synonymy list
YearName and author
1861Helmersenia Pander
1987Helmersenia Popov and Nolvak
1989Helmersenia Holmer
2000Helmersenia Williams et al. p. 143
2002Helmersenia Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
RankNameAuthor
phylumBrachiopodaCuvier 1805
subphylumLinguliformeaWilliams et al. 1996
classLingulataGorjansky and Popov 1985
orderSiphonotretidaGorjansky 1960
superfamilySiphonotretoideaKutorga 1848
familySiphonotretidaeKutorga 1848
genusHelmerseniaPander 1861

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