Genus Gephyreaster Fisher 1910

[New Japanese name: Daiou-momiji-hitode-zoku]

Gephyreaster Fisher 1910, p. 171; 1911: 175; 1919: 216; 1940: 82

Gephyriaster Spencer and Wright, 1966: U65 (misspelling)

Type species. Mimaster swifti Fisher 1905, by original designation, monotypy.

Diagnosis. Disc broad, flat, interradial margin evenly curved, multiple abactinal series extend to arm tip. Marginals paxilliform, narrow, no unpaired interradial marginals.

Etymology of Japanese name. The Japanese name ‘daiou’ means king, alluding to the relatively large body size among Pseudarchasteridae genera, and ‘momiji-hitode’ follows the Japanese name of the family Pseudarchasteridae .