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Rissopsis

Gastropoda - Iravadiidae

Taxonomy
Rissopsis was named by Garrett (1873) [m. kosnik taxon no: 7825]. It is extant.

It was assigned to Iravadiidae by Ponder (1984) and Wilson (1993).

Synonymy list
YearName and author
1873Rissopsis Garrett
1984Rissopsis Ponder pp. 56 - 58
1993Rissopsis Wilson p. 152

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classGastropoda
subclassCaenogastropoda(Cox 1959)
—Sorbeoconcha(Ponder and Lindberg 1997)
—Hypsogastropoda(Ponder and Lindberg 1997)
superfamilyTruncatelloideaGray 1840
familyIravadiidaeThiele 1928
genusRissopsisGarrett 1873

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.

G. Rissopsis Garrett 1873
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Diagnosis
ReferenceDiagnosis
W. F. Ponder 1984Of moderate size, sub cylindrical, thin, translucent, surface smooth and glossy, with flat whorls and pyriform aperture. Inner lip rather broad, thin; outer lip expanded slightly, orthocline to prosocline, aperture broadly excavated anteriorly; varix absent. Protoconch of about two whorls, very small, tightly colled, planorboid.