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Chariaster
Taxonomy
Chariaster was named by de Loriol (1909) [Sepkoski's age data: K Sant]. It is not extant.
It was assigned to Ophidiasteridae by de Loriol (1909) and Spencer and Wright (1966); and to Valvatida by Sepkoski (2002).
It was assigned to Ophidiasteridae by de Loriol (1909) and Spencer and Wright (1966); and to Valvatida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1909 | Chariaster de Loriol |
| 1966 | Chariaster Spencer and Wright p. U64 |
| 2002 | Chariaster 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 | |
|---|---|---|
| W. K. Spencer and C. W. Wright 1966 | Disk small. Arms long and slender arms, wider at base. Rounded arm tip. Marginals alternate in two prominent rows. Superomarginal plates generally with a large tubercle. Aboral surface flat but with median row formed by swollen intersection of long abactinal plates, most with a short rounded spine. Ornament of dense granules. Large papular area. Adambulacrals with one subambulacral spine. |
Measurements
No measurements are available
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| Source: f = family, c = class, p = phylum | |||||
| References: Aberhan 1992, Blake 1990, Aberhan et al. 2004 | |||||