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Rissoina (Rissolina)
Taxonomy
Rissolina was named by Gould (1861) [Sepkoski's age data: T Mi R]. It is extant.
It was reranked as Rissoina (Rissolina) by Ladd (1966) and Ponder (1984).
It was assigned to Rissoina by Ladd (1966) and Ponder (1984); and to Neotaenioglossa by Sepkoski (2002).
It was reranked as Rissoina (Rissolina) by Ladd (1966) and Ponder (1984).
It was assigned to Rissoina by Ladd (1966) and Ponder (1984); and to Neotaenioglossa by Sepkoski (2002).
Species lacking formal opinion data
Rissoina alabamenesis, Rissoina bakeri, Rissoina effusa, Rissoina elongata, Rissoina firmata, Rissoina flexuosa, Rissoina fragilis, Rissoina gisna, Rissoina hannai, Rissoina heterolira, Rissoina indrai, Rissoina juncea, Rissoina laurae, Rissoina nereina, Rissoina nigeriensis, Rissoina plicata, Rissoina subornata, Rissoina supracosta
Synonyms
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Synonymy list
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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.
Subg. Rissoina (Rissolina) Gould 1861
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Invalid names: Rissoina (Eurissolina) Woodring 1928 [synonym]
Diagnosis
Reference | Diagnosis | |
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W. F. Ponder 1984 | Shell: as for genus but axial sculpture always strong, spiral sculpture weak or absent except for a few spiral cords on periphery and upper base in some species. Lower base with a strong spiral fold (Figs 53A; 134A, E, F). Protoconch as for Rissoina s.s. (Fig. 134C). |