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Rissoina (Schwartziella)

Gastropoda - Rissoidae

Synonymy list
YearName and author
1881Schwartziella (Schwartziella) Nevill
1881Schwartziella Nevill p. 82
1948Rissoina (Schwartziella) Gardner p. 193
1949Rissoina (Schwartziella) Desjardin p. 199
1962Rissoina (Schwartziella) Weisbord p. 122
1965Rissoina (Schwartziella) Rosenberg p. 66
1972Schwartziella Ladd p. 63
2001Schwartziella Todd
2001Schwartziella (Schwartziella) Todd
2002Schwartziella Sepkoski, Jr.
2005Rissoina (Schwartziella) Rosenberg p. 66

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classGastropodaCuvier 1797
RankNameAuthor
superorderHypsogastropoda(Ponder and Lindberg 1997)
infraorderLittorinimorphaGolikov and Starobogtov 1975
Discopoda(Fischer 1884)
superfamilyRissooideaGray 1847
familyRissoidaeGray 1847
genusRissoinad'Orbigny 1840
subgenusSchwartziella(Nevill 1881)

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
H. S. Ladd 1972Shell: minute to small, elongate-conic, non-umbilicate, solid, with axial ribs. Aperture oval, channelled posteriorly, rounded anteriorly; inner lip concave, thickened; peristome simple. Outer lip opisthocline, with strong varix. Base with or without spiral fold. Protoconch multi spiral or paucispiral, weakly sculptured with a spiral row of raised gemmules and very minute, scattered granules or minute, irregular pits.