Astropecten is a genus of sea stars of the family Astropectinidae.
Ophiotrichidae are a family of brittle stars within the suborder Gnathophiurina.
Ceramaster is a genus of cushion stars in the family Goniasteridae. The species in this genus have no arms. They live in deeper waters than most sea stars.
Gorgonocephalus is a genus of marine basket stars in the class Ophiuroidea. Members of this genus are found in coldwater environments including the Arctic, the Antarctic, and deep-sea habitats. The scientific name comes from the Greek, gorgós meaning "dreaded" and -cephalus meaning "head", and refers to the similarity between these echinoids and the Gorgon's head from Greek myth with its coiled serpents for hair.
The Oreasteridae are a family of sea stars in the class Asteroidea.
Oreaster is a genus of sea stars in the family Oreasteridae.
Goniodiscaster is a genus of sea stars in the family Oreasteridae. Members of this genus can be found off the coasts of India, southeast Asia, and Australia. Other taxa commonly misidentified as this genus include Anthenea, Tosia, and Pentaceraster.
Pentaceraster is a genus of sea stars in the family Oreasteridae. Members of this genus are most often observed in warm coastal waters of the Pacific and Indian Oceans.
Luidia is a genus of starfish in the family Luidiidae in which it is the only genus. Species of the family have a cosmopolitan distribution.
Astropecten irregularis is a sea star of the family Astropectinidae. Common names include Sand sea star.
Certonardoa semiregularis is a species of sea star in the family Ophidiasteridae. It is the only species in the genus Certonardoa.
Archasteridae is a family of starfish found in shallow waters in the tropical Indo-Pacific region. The genus Astropus, previously included in this family, is now included in the genus Archaster with the single species, Astropus longipes, being accepted as Archaster lorioli Sukarno & Jangoux, 1977.
Ophiocoma is a genus of brittle stars belonging to the family Ophiocomidae.
Ophiactis is a genus of brittle stars (Ophiuroidea).
Asteronychidae is a family of echinoderms belonging to the order Euryalida.
Ophiomastix is a genus of echinoderms belonging to the family Ophiocomidae.
Ophiarachnella is a genus of echinoderms belonging to the family Ophiodermatidae.
Ophionereis is a genus of echinoderms belonging to the family Ophionereididae.
Macrophiothrix is a genus of brittle stars.
