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Helicocyclus

Cephalopoda - Goniatitida - Pericyclidae

Taxonomy
Helicocyclus was named by Schindewolf (1951) [Sepkoski's age data: C Vise-l Sepkoski's reference number: 954]. It is not extant.

It was assigned to Goniatitida by Sepkoski (2002); and to Ammonellipsitinae by Korn (2006) and Furnish et al. (2009).

Synonymy list
YearName and author
1951Helicocyclus Schindewolf
2002Helicocyclus Sepkoski, Jr.
2006Helicocyclus Korn
2009Helicocyclus Furnish et al. p. 28

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea(Zittel 1884)
orderGoniatitidaHyatt 1884
suborderGoniatitinaHyatt 1884
superfamilyPericycloidea(Hyatt 1900)
familyPericyclidaeHyatt 1900
subfamilyAmmonellipsitinaeRiley 1996
genusHelicocyclusSchindewolf 1951

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