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Volvulella

Gastropoda - Cephalaspidea - Retusidae

Taxonomy
Volvulella was named by Newton (1891) [Sepkoski's age data: T Eo-l R Sepkoski's reference number: 1248]. It is extant.

It was assigned to Cephalaspida by Sepkoski (2002); and to Retusidae by Todd (2001), Rosenberg (2005) and Wienrich and Janssen (2007).

Synonymy list
YearName and author
1891Volvulella Newton
2001Volvulella Todd
2002Volvulella Sepkoski, Jr.
2005Volvulella Rosenberg
2007Volvulella Wienrich and Janssen p. 779

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
subclassOpisthobranchiaMilne-Edwards 1848
orderCephalaspideaFischer 1883
superfamilyPhilinoideaGray 1850
familyRetusidaeThiele 1925
genusVolvulellaNewton 1891

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