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Afrollonia

Gastropoda - Trochidae

Taxonomy
Afrollonia was named by Adegoke (1977) [Sepkoski's age data: T Than Sepkoski's reference number: 705].

It was assigned to Colloniinae by Adegoke (1977); to Margaritinae by Kase (1984); to Archaeogastropoda by Sepkoski (2002); and to Gastropoda by Kiessling (2003).

Synonymy list
YearName and author
1977Afrollonia Adegoke p. 68
1984Afrollonia Kase p. 60
2002Affrollonia Sepkoski, Jr.
2003Afrollonia Kiessling

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
subclassOrthogastropoda
superorderVetigastropodaSalvini-Plawen 1980
superfamilyTrochoidea(Rafinesque 1815)
familyTrochidaeRafinesque 1815
subfamilyMargaritinaeStoliczka 1868
genusAfrollonia

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
O. S. Adegoke 1977Shell small, with moderately high spire and a small, smooth bulbous protoconch. Spiral whorls inflated and gently convex; body whorl rounded and relatively large. Whorls ornamented by fine revolving spirals a few of which occasionally become prominently elevated. Umbilicus moderately wide and deep, with a semilunar exterior outline and a turbinate, funnel-like outer chamber leading into a cylindrical inner passage separated from the former by a spiral ridge. Umbilical rim coarsely noded.