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Voorwindia

Gastropoda - Rissoidae

Taxonomy
Voorwindia was named by Ponder (1984) [Sepkoski's age data: T Ol Sepkoski's reference number: ZR85 (NOTE: this is wrongIt is a recent genus, and it's not clear that it has any fossil species.)]. It is extant.

It was assigned to Rissoidae by Ponder (1984); and to Neotaenioglossa by Sepkoski (2002).

Synonymy list
YearName and author
1984Voorwindia Ponder pp. 69 - 71
2002Voorwindia 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
genusVoorwindia

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 (up to about 2.6 mm in length), broadly ovate-conic, narrowly umbilicate to imperforate, with convex whorls and periphery. Sculpture of teleoconch of weak axial growth lines, and spiral microstriae or minute granules. Aperture ovate, angled but not channelled posteriorly, rounded and simple anteriorly. Outer lip thin, orthocline, with or without weak varix behind outer lip (Fig. 122A). Protoconch of about 1 %-2 Y4 whorls, initial whorl small, with weak, axial growth striae V-shaped at a weak spiral cord on last whorl. Periostracum very thin, trans parent.