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Williamia

Gastropoda - Siphonariidae

Taxonomy
Williamia was named by Monterosato (1884) [Sepkoski's age data: T Eo R]. It is extant.

It was assigned to Siphonariidae by Woodring (1928) and Todd (2001); and to Basommatophora by Sepkoski (2002).

Synonymy list
YearName and author
1884Williamia Monterosato p. 150
1928Williamia Woodring p. 111
2001Williamia Todd
2002Williamia Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
subclassPulmonataCuvier 1817
Basommatophora(Keferstein 1864)
superfamilySiphonarioideaGray 1840
familySiphonariidaeGray 1840
genusWilliamiaMonterosato 1884

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