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Ameranella

Gastropoda - Ranellidae

Taxonomy
Ameranella was named by Beu (1988) [Sepkoski's age data: T Eo-m-u T Mi-m Sepkoski's reference number: 909]. Its type is Nyctilochus kewi.

It was assigned to Opisthobranchia by Sepkoski (2002); and to Ranellinae by Beu (1988) and Beu (2010).

Synonymy list
YearName and author
1988Ameranella Beu pp. 79 - 82
2002Ameranella Sepkoski, Jr.
2010Ameranella Beu p. 116

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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
superfamilyTonnoidea(Suter 1913)
familyRanellidaeGray 1854
subfamilyRanellinaeGray 1854
genusAmeranella

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
ReferenceDiagnosis
A. G. Beu 1988Shell small for the subfamily (about 40-60 mm high), with small protoconch similar to that of modern A rgobuccinum species. Varices aligned, or nearly so, down initial 3-4 teleoconch whorls, becoming separated by 5· -10· on later whorls of some species, bearing 3 moderately to very prominent, rounded nodules· where crossed by the major spiral cords. Intervariceal sculpture of 3 or 4 rows of small to large, rounded nodules on the major spiral cords, and of interstitial spiral threads. Aperture similar to that of Ranella, but with outer lip interior gently rounded and weakly sculptured or with low nodules along inner edge, lacking the prominent angulation of Ranella species ; a row of small nodules on base of columella ; parietal tubercle constricts a shallow posterior sinus; anterior canal rather short, moderately narrow, straight or weakly deflected dorsally and to the left.