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Rissoina (Apataxia)
Taxonomy
Apataxia was named by Laseron (1956) [Sepkoski's age data: T Mi R Sepkoski's reference number: 650]. It is extant.
It was reranked as Rissoina (Apataxia) by Ponder (1984).
It was assigned to Rissoina by Ponder (1984); and to Neotaenioglossa by Sepkoski (2002).
It was reranked as Rissoina (Apataxia) by Ponder (1984).
It was assigned to Rissoina by 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
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 (Apataxia) Laseron 1956
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Diagnosis
Reference | Diagnosis | |
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W. F. Ponder 1984 | Shell: of small size, narrower than most Rissoina species. Sculpture of axial ribs crossed by weaker spiral cords. Aperture small, with a few weak ridges inside outer lip (Fig. 55). Protoconch typically conical, sculptured with raised chevron-shaped markings and granules in spiral series; apical whorl smooth; last whorl weakly keeled (Fig. 1320). Some species with apparently smooth, dome-shaped protoconch. |
Measurements
No measurements are available
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Source: f = family, c = class | |||||
References: Kiessling 2004, Hendy et al. 2009 |
Collections
No collection or age range data are available