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Rissoina (Pachyrissoina)

Gastropoda - Rissoidae

Synonymy list
YearName and author
1893Pachyrissoina Boettger p. 104
1984Rissoina (Pachyrissoina) Ponder p. 85
2002Pachyrissoina Sepkoski, Jr.

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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
subgenusPachyrissoina(Boettger 1893)

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: rather broad, large, whorls lightly convex, narrowly shouldered just below sutures, with strong, rounded axial ribs and weak spiral striae. Axials terminated at periphery by a strong spiral cord (Fig. 56). Protoconch not known.