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Stauranderaster pyramidalis
Taxonomy
Stauranderaster gibbosus pyramidalis was named by Spencer (1913). It is not extant. Its type specimen is Geological Museum of Copenhagen University.
It was recombined as Stauranderaster pyramidalis by Brünnich-Nielsen (1943), Rasmussen (1950), Rasmussen (1979) and Villier et al. (2004).
It was recombined as Stauranderaster pyramidalis by Brünnich-Nielsen (1943), Rasmussen (1950), Rasmussen (1979) and Villier et al. (2004).
Synonymy list
| Year | Name and author |
|---|---|
| 1913 | Stauranderaster gibbosus pyramidalis Spencer p. 135 figs. pl. 13, fig. 12-13; pl. 16, fig. 30 |
| 1943 | Stauranderaster pyramidalis Brünnich-Nielsen p. 63 |
| 1950 | Stauranderaster pyramidalis Rasmussen p. 87 figs. pl. 10, fig. 15 |
| 1979 | Stauranderaster pyramidalis Rasmussen p. 70 |
| 2004 | Stauranderaster pyramidalis Villier et al. p. 40 |
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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.
†Stauranderaster pyramidalis Spencer 1913
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. W. Rasmussen 1950 | A Stauranderaster whose large abactinal ossicles have a semi spherical or, more commonly bell-shaped outer surface. The ornamentation of the surface is usually composed of scattered spine-pits, which may be lipped. There can also be a weak rugosity on the peripheral part of the ossicle, together with a narrow somewhat depressed border. |
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992 | |||||
Collections
No collection or age range data are available