Gray, John Edward (1866). Synopsis of the Species of Starfish in the British Museum. John Van Voorst. p. 5. body supported by roundish or elongated pieces, covered with a smooth or granular skin, pierced with minute pores between the.
Clark, Ailsa M.; Rowe, Franck W. (1971). Monograph of shallow-water Indo-West Pacific echinoderms. Trustees of the British Museum (Natural History). OCLC717759019.