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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.
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.
Amphipneustes marsupialis 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 marsupialis was first scientifically described in 1926 by Koehler.
Amphipneustes mironovi 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 mironovi was first scientifically described in 1991 by Markov.
Amphipneustes similis 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 similis was first scientifically described in 1936 by Ole Mortensen, Danish zoologist.
Anametalia grandis is a species of sea urchin of the family Brissidae. Their armour is covered with spines. It is placed in the genus Anametalia and lives in the sea. Anametalia grandis was first scientifically described in 1950 by Ole Mortensen.
Anochanus sinensis is a species of sea urchin of the family Cassiduloida. Their armour is covered with spines. It is placed in the genus Anochanus and lives in the sea. Anochanus sinensis was first scientifically described in 1868 by Adolph Grube.
Antrechinus drygalskii 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 drygalskii was first scientifically described in 1905 by Ole Mortensen, Danish zoologist.
Antrechinus mortenseni is a species of sea urchin of the family Urechinidae. Their armour is covered with spines. Antrechinus mortenseni was first scientifically described in 1990 by David & Mooi.
Apatopygus occidentalis 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 occidentalis was first scientifically described in 1928 by Hubert Lyman Clark, American zoologist.
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.
Araeosoma alternatum 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 alternatum was first scientifically described in 1934 by Ole Theodor Jensen Mortensen, a Danish zoologist.
Araeosoma splendens 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 splendens was first scientifically described in 1934 by Ole Theodor Jensen Mortensen.
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.
Arbaciella elegans is a species of sea urchin of the family Arbaciidae. Their armour is covered with spines. It is placed in the genus Arbacia and lives in the sea. Arbaciella elegans was first scientifically described in 1910 by Ole Theodor Jensen Mortensen.
Asthenosoma dilatatum is a species of sea urchin of the family Echinothuriidae. Their armour is covered with spines. It is placed in the genus Asthenosoma and lives in the sea. Asthenosoma dilatatum was first scientifically described in 1934 by Ole Theodor Jensen Mortensen.
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.
Antrechinus is a genus of echinoderms belonging to the family Urechinidae.
References
- ↑ Kroh, A. (2010). Antrechinus nordenskjoldi (Mortensen, 1905). In: Kroh, A. & Mooi, R. (2010) World Echinoidea Database. at the World Register of Marine Species.
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