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Tesselaster
Taxonomy
Tesselaster was named by Clark (1941) [Sepkoski's age data: T Eo-u R]. It is extant.
It was assigned to Goniasteridae by Clark (1941), Clark and Downey (1992); and to Valvatida by Sepkoski (2002).
It was assigned to Goniasteridae by Clark (1941), Clark and Downey (1992); and to Valvatida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1941 | Tesselaster Clark |
| 1992 | Tesselaster Clark and Downey p. 206 |
| 2002 | Tesselaster Sepkoski |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. M. Clark and M.E. Downey 1992 | A genus of Goniasteridae with stellate form, long, narrow arms, abactinal plates polygonal, covered with granules; superomarginal plates mostly bare, with sunken patches containing granules; adambulacral furrow margin strongly angular, granulation spaced. |
Measurements
No measurements are available
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| Source: f = family, c = class, p = phylum | |||||
| References: Aberhan 1992, Aberhan et al. 2004, Blake 1990 | |||||