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Fomalhautia
Taxonomy
Fomalhautia was named by Blake and Reid (1998) [Sepkoski's age data: K Albi-m Sepkoski's reference number: 1265]. It is not extant. Its type is Metopaster hortensae.
It was assigned to Goniasteridae by Blake and Reid (1998); and to Valvatida by Sepkoski (2002).
It was assigned to Goniasteridae by Blake and Reid (1998); and to Valvatida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1998 | Fomalhautia Blake and Reid p. 517 |
| 2002 | Fomalhautia 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.
G. †Fomalhautia Blake and Reid 1998
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†Fomalhautia hortensae Adkins and Winton 1920
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. B. Blake and R. Reid 1998 | Adult size apparently small, form pentagonal, sides straight to weakly concave. Abactinals tabulate, large relative to disk size, primary circlet ossicles enlarged. Marginals between interbrachial axis and arm tip three in number, very small fourth on largest individuals. Second and third superomarginals abutted along mid-line. Marginals high, outer surface broadly arched, with small, rather widely spaced pustules about 0.25 mm in diameter, these bearing slender spinelets. Pustular groove developed along adradial margin of superomarginals. |