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Prososthenia eburnea
Taxonomy
Prososthenia eburnea was named by Brusina (1884).
Synonymy list
| Year | Name and author |
|---|---|
| 1884 | Prososthenia eburnea Brusina p. 49 |
| 2013 | Prososthenia eburnea Neubauer et al. p. 143 figs. 8C–D, G, I |
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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.
†Prososthenia eburnea Brusina 1884
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. A. Neubauer et al. 2013 | Small, slender and fairly ovoid shell. The protoconch exhibits a granular surface and comprises about one depressed whorl. The embryonic cap is immersed. The transition to the teleoconch is marked by a more or less distinct rim. This species is represented by phenotypes of several size classes, whereas the largest (max. 5 mm in height and 2 mm in width) attains about the double size of the smallest class (height: 2.5 mm; width: 1 mm). Intermediate forms occur as well. Depending on size, the specimens have 5–7 whorls, which are weakly convex. Especially in small specimens, this often results in an adpressed architecture forming a regular ovoid to elliptical outline. The last whorl makes up to 50–70 per cent of shell height, whereas smaller individuals usually have a larger body whorl. The aperture is ovoid to semilunar, simple and leaves no umbilicus. Weak growth lines and numerous faint spiral grooves cover the surface. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Bush and Bambach 2015, Kiessling 2004 | |||||