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Cycloholcus

Helcionelloida - Helcionellida - Helcionellidae

Taxonomy
Cycloholcus was named by Knight (1947) [Sepkoski's age data: Cm Dres-l Sepkoski's reference number: 111]. It is not extant. Its type is Cycloholcus nummus.

It was assigned to Coreospiridae by Knight et al. (1960); to Helcionellidae by Runnegar and Jell (1976); and to Mollusca by Sepkoski (2002).

Synonymy list
YearName and author
1947Cycloholcus Knight
1960Cycloholcus Knight et al. p. 172
1976Cycloholcus Runnegar and Jell p. 116
2002Cycloholcus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
RankNameAuthor
phylumMollusca
classHelcionelloidaPeel 1991
orderHelcionellida
superfamilyHelcionelloidea(Wenz 1938)
familyHelcionellidae
genusCycloholcus

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