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Circulus

Gastropoda - Vitrinellidae

Taxonomy
Circulus was named by Jeffreys (1842) [Sepkoski's age data: T Than-l R Sepkoski's reference number: 794]. It is extant. Its type is Circulus duminyi.

It was reranked as Vitrinella (Circulus) by Maury (1917).

It was assigned to Vitrinella by Maury (1917); to Cyclostrematidae by Gardner (1948); to Adeorbinae by Marquet (1997); to Adeorbiidae by Lozouet (1998); to Vitrinellidae by Gardner (1947), Todd (2001) and Wienrich (2001); and to Archaeogastropoda by Sepkoski (2002).

Synonymy list
YearName and author
1842Circulus Jeffreys
1917Vitrinella (Circulus) Maury p. 320
1947Circulus Gardner p. 598
1948Circulus Gardner p. 189
1997Circulus Marquet p. 17
1998Circulus Lozouet p. 86
2001Circulus Todd
2001Circulus Wienrich p. 399
2002Circulus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
superorderHypsogastropoda(Ponder and Lindberg 1997)
infraorderLittorinimorphaGolikov and Starobogtov 1975
Discopoda(Fischer 1884)
superfamilyRissooideaGray 1847
familyVitrinellidaeBush 1897
genusCirculusJeffreys 1842

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