| Circeaster | |
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| Circeaster arandae | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
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| Genus: | Circeaster Koehler, 1909 [1] |
Circeaster is a genus of abyssal sea stars in the family Goniasteridae.
| Circeaster | |
|---|---|
| | |
| Circeaster arandae | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Order: | |
| Family: | |
| Genus: | Circeaster Koehler, 1909 [1] |
Circeaster is a genus of abyssal sea stars in the family Goniasteridae.
These sea stars have a flattened and broad pentagonal central disc, with 5 tapering arm. The marginal plates are thick and well delimited. [2]
They live between 320 and 3000 meters deep, in the three main oceanic basins. [2]
According to World Register of Marine Species: [1]
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea. Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as Asteroids due to being in the class Asteroidea. About 1,500 species of starfish occur on the seabed in all the world's oceans, from the tropics to frigid polar waters. They are found from the intertidal zone down to abyssal depths, 6,000 m (20,000 ft) below the surface.
The Asterinidae are a large family of sea stars in the order Valvatida.
Coscinasterias is a genus of sea stars of the family Asteriidae.
Goniasteridae constitute the largest family of sea stars, included in the order Valvatida. They are mostly deep-dwelling species, but the family also include several colorful shallow tropical species.
The Forcipulatida are an order of sea stars, containing three families and 49 genera.
The Brisingids are deep-sea-dwelling starfish in the order Brisingida.
Hippasteria is one of 70 genera of sea star in the diverse family Goniasteridae.
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:
Xyloplax turnerae is a sea daisy, a member of an unusual group of marine taxa belonging to the phylum Echinodermata. It has been found living on decaying timber in a deep oceanic trench in the Bahamas.
Poraniidae is a family of starfishes in the order Valvatida.
The Freyellidae are a family of deep-sea-dwelling starfish. It is one of two families in the order Brisingida. The majority of species in this family are found in Antarctic waters and near Australia. Other species have been found near New Zealand and the United States.
The Zoroasteridae are one of three families of Asteroidea in the order Forcipulatida. It contains seven living genera and one extinct genus.
Paranepanthia is a genus of starfish of the family Asterinidae. Members of the genus have five rays and are found in the waters around Australia, Indonesia and Antarctic New Zealand.
Trophodiscus is a genus of starfish in the family Astropectinidae. There are only two species, both found in fairly deep waters in the Sea of Okhotsk. Trophodiscus almus is also found in the Sea of Japan and around the Japanese island of Hokkaido. These starfish are very unusual in that the young are brooded on the upper surface of the female.
Pterasteridae is a family of sea stars in the order Velatida, consisting of eight genera.
Evoplosoma is a genus of deep-sea sea star in the family Goniasteridae.
Astroceramus is a genus of abyssal sea stars in the family Goniasteridae.
Apollonaster is a genus of abyssal sea stars in the family Goniasteridae. They can be identified by their bare abactinal plate surfaces and multiple accessory granule rows on their abactinal plates. To date, Apollonaster has been found in the tropical Atlantic region and Hawaiian Islands region oceans, with no other locations or species being known as of 2015.
Hippasteria muscipula is one of twelve species of deep-sea sea star in the genus Hippasteria, which is in the family Goniasteridae.
Neoferdina cumingi, also known as Cuming's sea star, is a species of starfish in the family Goniasteridae. It is native to the tropical Indo-Pacific region.
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