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Cidaris is a genus of pencil sea urchins.
The Echinothurioida are an order of sea urchins in the class Echinoidea. Echinothurioids are distinguished from other sea urchins by the combination of a flexible test and hollow spines. The membrane around the mouth contains only simple plates, in contrast to the more complex mouth parts of their close relatives, the Diadematoida. They are nearly all deepsea dwellers.
Cidaroida is an order of primitive sea urchins, the only living order of the subclass Perischoechinoidea. All other orders of this subclass, which were even more primitive than the living forms, became extinct during the Mesozoic.
Cidaridae is a family of sea urchins in the order Cidaroida.
The Camarodonta are an order of globular sea urchins in the class Echinoidea. The fossil record shows that camarodonts have been in existence since the Lower Cretaceous.
Apatopygus recens is a species of sea urchin of the family Apatopygidae. Their armour is covered with spines. It is placed in the genus Apatopygus and lives in the sea. Apatopygus recens was first scientifically described in 1836 by Milne-Edwards, French zoologist.
Aphanopora echinobrissoides is a species of sea urchin of the family Neolampadidae. Their armour is covered with spines. It is placed in the genus Aphanopora and lives in the sea. Aphanopora echinobrissoides was first scientifically described in 1903 by de Meijere.
Araeosoma belli is a species of sea urchin of the family Echinothuriidae. Their armour is covered with spines. It is placed in the genus Araeosoma and is found throughout the Caribbean Sea as well as areas around the Gulf of Mexico. Araeosoma belli was first scientifically described in 1903 by Ole Theodor Jensen Mortensen, a Danish zoologist.
Araeosoma violaceum is a species of sea urchin of the family Echinothuriidae. Its armour is covered with spines. It is placed in the genus Araeosoma and lives in the sea. A. violaceum was first scientifically described in 1903 by Ole Theodor Jensen Mortensen.
Calocidaris micans is a species of sea urchins of the Family Cidaridae. Their armour is covered with spines. Calocidaris micans was first scientifically described in 1903 by Ole Mortensen.
Chaetodiadema granulatum is a species of sea urchins of the Family Diadematidae. Their armour is covered with long and slender spines, and the test is quite flattened.
Cidaris abyssicola is a species of sea urchin in the Family Cidaridae. Cidaris abyssicola was first scientifically described in 1869 by Alexander Emanuel Agassiz.
Cidaris mabahissae is a species of sea urchins of the Family Cidaridae. Their armour is covered with spines. Cidaris mabahissae was first scientifically described in 1939 by Ole Mortensen.
Cidaris rugosa is a species of sea urchins of the Family Cidaridae. Their armour is covered with spines. Cidaris rugosa was first described in 1907 by Hubert Lyman Clark as Dorocidaris rugosa.
Cionobrissus revinctus is a species of sea urchins of the Family Brissidae. Their armour is covered with spines. Cionobrissus revinctus was first scientifically described in 1879 by Alexander Emanuel Agassiz.
Chaetodiadema is a genus of sea urchins of the Family Diadematidae. Their armour is covered with spines.
The Echinothuriidae are a family of sea urchins in the order Echinothurioida. Due to their soft skeletons, most are called "leather urchins", but species in the genus Asthenosoma are also known as "fire urchins" due to their bright colors and painful, venomous sting.
Gracilechinus is a genus of sea urchins in the family Echinidae.
Araeosoma is a genus of deep-sea sea urchins in the family Echinothuriidae.
Parechinus angulosus, the Cape urchin, is a sea urchin in the family Parechinidae endemic to southern Africa.
References
- ↑ Kroh, A. (2010). Cidaris nuda (Mortensen, 1903). In: Kroh, A. & Mooi, R. (2010) World Echinoidea Database. at the World Register of Marine Species.
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