Paxillosida

The Paxillosida are a large order of sea stars.

The Porcellanasteridae are a family of sea stars in the order Paxillosida. These sea stars are found at abyssal depths. The World Asteroidea Database includes these genera in this family: Abyssaster Madsen, 1961 Benthogenia Fisher, 1911 Damnaster H.E.S. Clark & McKnight, 1994 Eremicaster Fisher, 1905 Hyphalaster Sladen, 1883 Lethmaster Belyaev, 1969 Lysaster Bell, 1909 Porcellanaster Wyville Thomson, 1877 Sidonaster Koehler, 1909 Styracaster Sladen, 1883 Thoracaster Sladen, 1883 Vitjazaster Belyaev, 1969

Goniopectinidae is a family of echinoderms belonging to the order Paxillosida.

Ctenodiscidae is a family of echinoderms belonging to the order Paxillosida.

Radiasteridae is a family of echinoderms belonging to the order Paxillosida.

Betelgeusia is an extinct genus of sea stars in the family Radiasteridae. It was described by Blake and Reid, in 1998, and existed in what is now the Netherlands, Texas, United States, Morocco, and India, during the Middle Jurassic through the Cretaceous period. It contains the species B. brezinai, B. exposita, B. riedi, and B. orientalis.