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.
Brissalius vannoordenburgi is a species of sea urchin in the Family Brissidae. Their armour is covered with spines. Brissalius vannoordenburgi was first scientifically described in 2008 by Coppard.
Brissopsis alta is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis alta was first scientifically described in 1907 by Ole Mortensen.
Brissopsis atlantica is a species of sea urchin of the family Brissidae. Their armour is covered with spines. Brissopsis atlantica was first scientifically described in 1907 by Ole Theodor Jensen Mortensen.
Brissopsis bengalensis is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis bengalensis was first scientifically described in 1914 by Koehler.
Brissopsis caparti is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis caparti was first scientifically described in 1959 by Cherbonnier.
Brissopsis columbaris is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis columbaris was first scientifically described in 1898 by Alexander Emanuel Agassiz.
Brissopsis elongata is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis elongata was first scientifically described in 1907 by Ole Theodor Jensen Mortensen.
Brissopsis evanescens is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis evanescens was first scientifically described in 1950 by Ole Theodor Jensen Mortensen.
Brissopsis jarlii is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis jarlii was first scientifically described in 1951 by Ole Theodor Jensen Mortensen.
Brissopsis luzonica is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis luzonica was first scientifically described in 1851 by Gray.
Brissopsis micropetala is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis micropetala was first scientifically described in 1948 by Ole Theodor Jensen Mortensen.
Brissopsis pacifica is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis pacifica was first scientifically described in 1898 by Alexander Emanuel Agassiz.
Brissopsis parallela is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis parallela was first scientifically described in 1914 by Koehler.
Brissopsis persica is a species of sea urchins of the Family Brissidae. Their armour is covered with spines. Brissopsis persica was first scientifically described in 1940 by Ole Theodor Jensen Mortensen.
Brissopsis similis is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis similis was first scientifically described in 1948 by Ole Theodor Jensen Mortensen.
Brissopsis zealandiae is a species of sea urchins of the family Brissidae. Their armour is covered with spines. Brissopsis zealandiae was first scientifically described in 1921 by Ole Theodor Jensen Mortensen.
Clypeaster aloysioi is a species of sea urchins of the Family Clypeasteridae. Their armour is covered with spines. C. aloysioi was first scientifically described in 1959 by Brito.
Amphiura chiajei is a species of brittle star belonging to the family Amphiuridae. It is found in the northeastern Atlantic Ocean and adjoining seas to a depth of 1,000 metres (3,300 ft). It digs itself into the soft sediment of the seabed and raises its arms into the water above to suspension feed on plankton. It was first described by the British naturalist Edward Forbes in 1843, and was named for the Italian zoologist Stefano Delle Chiaje (1794–1860).
Brissopsis is a genus of echinoderms belonging to the family Brissidae.
