The Zoroasteridae are one of three families of Asteroidea (sea stars) in the order Forcipulatida. It contains seven living genera and one extinct genus.Marinespecies.org
Genera The living genera described are: Bythiolophus Fisher, 1916 (monotypic) B. acanthinus Fisher, 1916 Cnemidaster Sladen, 1889 (six species) Doraster Downey, 1970 (monotypic) D. constellatus Downey, 1970 Myxoderma Fisher, 1905 (five species) Pholidaster Sladen, 1889 (monotypic) P. squamatus Sladen, 1889 Sagenaster Mah, 2007 (monotypic) S. evermanni (Fisher, 1905) Zoroaster Thomson, 1873 (20 species)
The extinct genus known is: Terminaster Hess, 1974†
Distribution Species in this family are widespread, distributed mainly in Pacific, Atlantic, and Indian Oceans. A few are found in the Arctic and Antarctic Oceans.GBIF.org
References
Sladen, W.P. (1889). Report on the Asteroidea. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–1876, Zoology 30(51): xlii + 893 pages 118 plates. Hansson, H.G. (2001). Echinodermata, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 336–351 (look up in IMIS)
Further reading
EOL.org