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Arbaciella
''Arbaciella'' is a genus of echinoderms An echinoderm () is any member of the phylum Echinodermata (). The adults are recognisable by their (usually five-point) radial symmetry, and include starfish, brittle stars, sea urchins, sand dollars, and sea cucumbers, as well as the sea li ... belonging to the family Arbaciidae. Species: *'' Arbaciella elegans'' *'' Arbaciella regularis'' References Arbacioida Echinoidea genera {{echinoidea-stub ...
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Arbaciella Elegans
''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.Kroh, A. (2010). ''Arbaciella elegans'' (Ole Theodor Jensen Mortensen, 1910). In: Kroh, A. & Mooi, R. (2010World Echinoidea Database at the World Register of Marine Species 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. Content The content of the registry is edited and maintained by scientific specialist .... See also * Arbacia spatuligera * Arbacia stellata * Argopatagus planus References Arbacioida Animals described in 1910 Taxa named by Ole Theodor Jensen Mortensen {{echinoidea-stub ...
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Arbaciella Regularis
''Arbaciella'' is a genus of echinoderms belonging to the family Arbaciidae. Species: *''Arbaciella elegans ''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 ...'' *'' Arbaciella regularis'' References Arbacioida Echinoidea genera {{echinoidea-stub ...
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Arbaciidae
Arbacioida are an order of sea urchins, consisting of a single family, the Arbaciidae. They are distinguished from other sea urchins by the presence of five separate plates around the anus. Unlike their close relatives, the Salenioida, all of the tubercles on their tests are of similar size. Genera: *''Arbacia'' Gray, 1835 *''Arbaciella'' Mortensen, 1910a *'' Arbia'' Cooke, 1948† *'' Baueria'' Noetling, 1885† *'' Codiopsis'' Agassiz, in Agassiz & Desor, 1846† *''Coelopleurus'' Agassiz, 1840a *'' Cottaldia'' Desor, 1856 † *'' Dialithocidaris'' Agassiz, 1898 *'' Habrocidaris'' Agassiz & Clark, 1907b *'' Podocidaris'' Agassiz, 1869 *'' Pygmaeocidaris'' Döderlein, 1905 *'' Sexpyga'' Shigei, 1975 *''Tetrapygus'' Agassiz Jean Louis Rodolphe Agassiz ( ; ) FRS (For) FRSE (May 28, 1807 – December 14, 1873) was a Swiss-born American biologist and geologist who is recognized as a scholar of Earth's natural history. Spending his early life in Switzerland, he rec ..., 1841b ...
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Arbacioida
Arbacioida are an order (biology), order of sea urchins, consisting of a single family, the Arbaciidae. They are distinguished from other sea urchins by the presence of five separate plates around the anus. Unlike their close relatives, the Salenioida, all of the tubercles on their tests are of similar size. Genera: *''Arbacia'' Gray, 1835 *''Arbaciella'' Mortensen, 1910a *''Arbia (echinoderm), Arbia'' Cooke, 1948† *''Baueria'' Noetling, 1885† *''Codiopsis'' Louis Agassiz, Agassiz, in Agassiz & Desor, 1846† *''Coelopleurus'' Louis Agassiz, Agassiz, 1840a *''Cottaldia'' Desor, 1856 † *''Dialithocidaris'' Alexander Agassiz, Agassiz, 1898 *''Habrocidaris'' Alexander Agassiz, Agassiz & Clark, 1907b *''Podocidaris'' Alexander Agassiz, Agassiz, 1869 *''Pygmaeocidaris'' Ludwig Heinrich Philipp Döderlein, Döderlein, 1905 *''Sexpyga'' Shigei, 1975 *''Tetrapygus'' Louis Agassiz, Agassiz, 1841b References

* * Arbacioida, Extant Middle Jurassic first appearances {{Echi ...
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Echinoderms
An echinoderm () is any member of the phylum Echinodermata (). The adults are recognisable by their (usually five-point) radial symmetry, and include starfish, brittle stars, sea urchins, sand dollars, and sea cucumbers, as well as the sea lilies or "stone lilies". Adult echinoderms are found on the sea bed at every ocean depth, from the intertidal zone to the abyssal zone. The phylum contains about 7,000 living species, making it the second-largest grouping of deuterostomes, after the chordates. Echinoderms are the largest entirely marine phylum. The first definitive echinoderms appeared near the start of the Cambrian. The echinoderms are important both ecologically and geologically. Ecologically, there are few other groupings so abundant in the biotic desert of the deep sea, as well as shallower oceans. Most echinoderms are able to reproduce asexually and regenerate tissue, organs, and limbs; in some cases, they can undergo complete regeneration from a single limb. Geolo ...
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