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Folinia

Gastropoda - Rissoidae

Taxonomy
Folinia was named by Crosse (1868) [Sepkoski's age data: Q Plei R Sepkoski's reference number: 650]. It is extant.

It was assigned to Rissoidae by Ponder (1984), Ponder and Lindberg (1997) and Todd (2001); and to Neotaenioglossa by Sepkoski (2002).

Synonymy list
YearName and author
1868Folinia Crosse
1984Folinia Ponder p. 91
1997Folinia Ponder and Lindberg
2001Folinia Todd
2002Folina 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
familyRissoidaeGray 1847
genusFoliniaCrosse 1868

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
W. F. Ponder 1984Shell: small, elongate-conic, nonumbilicate, with strong axial ribs and spiral threads, or smooth and glossy with punctate microsculpture. Aperture D-shaped, with anterior and posterior angulations and channels; anterior channel narrow, weak to deep; posterior channel a narrow, deep notch. Outer lip opisthocline, with varix and duplicated edge. Base with prominent spiral fold (Figs 61; 140A, E; 142F). Protoconch elongately conic, about 3 Yz convex or shouldered whorls with weak spiral lirae or prominant spiral ridge (Fig. 140B, F).