The Aspidodiadematidae are a family of sea urchins.
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms.
The heart urchins or Spatangoida are an order of sea urchins.
The Echinacea are a superorder of sea urchins. They are distinguished by the presence of a rigid test, with ten buccal plates around the mouth, and solid spines. Unlike some other sea urchins, they also possess gills. The group is a large one, with species found worldwide.
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.
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.
Aceste bellidifera is a species of sea urchin of the family Schizasteridae. Their armour is covered with spines. It came from the genus Aceste and lives in the sea. Aceste bellidifera was first scientifically described in 1877 by Thomson.
Agassizia excentrica is a species of sea urchin of the family Prenasteridae. The species was first scientifically described in 1869 by Alexander Agassiz.
Amphipneustes davidi is a species of sea urchin of the family Temnopleuridae. Their armour is covered with spines. It is placed in the genus Amphipneustes and lives in the sea. Amphipneustes davidi was first scientifically described in 2010 by Madon-Senez.
Amphipneustes koehleri is a species of sea urchin of the family Temnopleuridae. Their armour is covered with spines. It is placed in the genus Amphipneustes and lives in the sea. Amphipneustes koehleri was first scientifically described in 1905 by Ole Mortensen.
Antrechinus nordenskjoldi is a species of sea urchin of the family Urechinidae. Their armour is covered with spines. It is placed in the genus Antrechinus and lives in the sea. Antrechinus nordenskjoldi was first scientifically described in 1905 by Ole Theodor Jensen Mortensen.
Araeosoma fenestratum is a species of sea urchin of the family Echinothuriidae. Their armour is covered with spines. It is placed in the genus Araeosoma and lives in the sea. Araeosoma fenestratum was first scientifically described in 1872 by Thomson.
Araeosoma thetidis is a species of sea urchin of the family Echinothuriidae. This species can be found in deep sea off Australia and New Zealand. A. thetidis was first scientifically described in 1909 by Hubert Lyman Clark.
Echinometra is a genus of sea urchins in the family Echinometridae.
Calveriosoma hystrix is a species of sea urchins of the Family Echinothuriidae. Their armour is covered with spines. Calveriosoma hystrix was first scientifically described in 1872 by Thomson.
Calymne relicta is a species of sea urchins of the Family Calymnidae. Their armour is covered with spines. Calymne relicta was first scientifically described in 1877 by Thomson.
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.
Strongylocentrotus fragilis is a species of sea urchin of the family Strongylocentrotidae.
Aeropsis is a genus of sea urchins in the family Aeropsidae.
Araeosoma is a genus of deep-sea sea urchins in the family Echinothuriidae.
