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Fayoumaster
Taxonomy
Fayoumaster was named by Roman and Strougo (1987) [Sepkoski's age data: T Eo-u T Mi-m]. It is not extant. Its type is Fayoumaster pharaonum.
It was assigned to Goniasteridae by Roman and Strougo (1987); and to Valvatida by Sepkoski (2002).
It was assigned to Goniasteridae by Roman and Strougo (1987); and to Valvatida by Sepkoski (2002).
Species
Synonymy list
Year | Name and author |
---|---|
1987 | Fayoumaster Roman and Strougo p. 36 |
2002 | Fayoumaster 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. †Fayoumaster Roman and Strougo 1987
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†Fayoumaster desmoulinsi d'Archiac 1850
†Fayoumaster lamberti Valette 1932
†Fayoumaster pharaonum Roman and Strougo 1987
Diagnosis
Reference | Diagnosis | |
---|---|---|
J. Roman and A. Strougo 1987 | Goniasteridae with rather long, acute arms. Well-defined, large madreporite. Five primary interradial abactinals differentiated bearing tubercles. Large interradial abactinals organized in to rows, encircling the primary interradial. Other abactinals polygonal, tessellated. Carinal row differentiated in the arm with few lateral abactinals. Marginals wide in the disc tend to be longer, quadrate in the arm. Superomarginals granular. Inferomarginals with a single robust spine. Adambulacrals with one or two subambulacral spines. |