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Echinacea (animal)
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. Echinacea are part of Animalia (kingdom), Echinodermata (phylum), Echinozoa (subphylum), Echinoidea (class), Euechinoidea (subclass), Carinacea (infraclass). Child taxa According to 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 specialis ...: * Order Arbacioida (Gregory, 1900) -- 1 family and 2 fossiles * Order Camarodonta (Jackson, 1912) ** Infraorder Echinidea (Kroh & Smith, 2010) -- 5 families ** Infraorder Temnopleuridea (Kroh & Smith, 2010) -- 2 families and 2 fossiles * Orde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinus Melo
''Echinus melo'', melon sea urchin, is a species of sea urchin in the family Echinidae. Description This species grows up to 17 cm (7 in) in diameter. It is spherical or slightly cone-shaped, and the colour of the test is mainly pinkish, yellowish, or greenish-yellow, and banded with white and pale brown, giving it a segmented appearance. The long primary spines are few in number and olive green with pale tips. They grow in a single row on each ambulacral plate. The much shorter secondary spines are yellowish green and are densely packed in several rows.''Echinus melo'' European Marine Life. Retrieved 2011-09-12. Distribution The melon sea urchin is found in the |
Camarodonta
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.The Echinoid Directory The Natural History Museum. Retrieved 2011-08-27. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates with the lowest elements enlarged. The pores are at regular intervals along the ambulacral plates from the apex to the mouth opening or peristome. The Aristotle's lantern, or jaw system, has keeled teeth with the supports meeting above the "foramen magnum".Families According to |
Stomopneustes Variolaris
''Stomopneustes variolaris'', the black sea urchin or long-spined sea urchin, is a species of sea urchin, the only one in its genus ''Stomopneustes'' and only species still alive in its family Stomopneustidae. It is found throughout the tropical Indo-Pacific, with a patchy distribution. Description It is a rather big and strong regular sea urchin. The spines are robust and sharp, black with sometimes a blue-greenish tinge (depending on the light). They can be recognized thanks to the 5 grey sutures on the upper face, exhibiting distinctive zig-zag pattern. The oral face is clearer. The juveniles are clearer too (they can be black but also pale brown), and often show strikingly asymmetrical spines, due to their habit to use them for digging hiding holes in soft rocks. Image:S. variolaris.jpg, The five zig-zag sutures are visible. Image:Oursins.jpg, ''Stomopneustes variolaris'' in Réunion island (along with some ''Echinometra mathaei''). Image:Stomopneustes variolaris pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinidea
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.The Echinoid Directory The Natural History Museum. Retrieved 2011-08-27. Characteristics All camarodonts have imperforate tubercles and compound ambulacral plates with the lowest elements enlarged. The pores are at regular intervals along the ambulacral plates from the apex to the mouth opening or peristome. The Aristotle's lantern, or jaw system, has keeled teeth with the supports meeting above the "foramen magnum".Families According to |
Paracentrotus Lividus
''Paracentrotus lividus'' is a species of sea urchin in the family Parechinidae commonly known as the purple sea urchin. It is the type species of the genus and occurs in the Mediterranean Sea and eastern Atlantic Ocean. Description ''Paracentrotus lividus'' has a circular, flattened greenish test with a diameter of up to seven centimetres. The test is densely clothed in long and sharply pointed spines that are usually purple but are occasionally other colours including dark brown, light brown and olive green. There are five or six pairs of pores on each ambulacral plate. The tube feet are in groups of 5 or 6, arranged in small arcs.Purple sea urchin - ''Paracentrotus lividus'' |
Arbacia Lixula
''Arbacia lixula'', the black sea urchin, is a species of sea urchin from Europe. Description It is a medium-sized sea urchin, characterized by its deep black color and its hemispherical shape. All of its spines are roughly the same size (no "secondary spines"), and worn erected (never dishevelled when in the water). The anus on the top is surrounded by four plates forming an anal valve. The oral face is nearly naked, the mouth being surrounded by soft, dark-greenish skin.ZIEMSKI Frédéric, André Frédéric, in: DORIS, 15/5/2014Arbacia lixula (Linnaeus, 1758) Image:Arbacia lixula 03.JPG, Profile Image:Black Sea Urchin (Arbacia lixula) in Croatia.jpg , Sticking on a rock Image:Sea urchin upside down.JPG, Oral face Image:Arbacia lixula.JPG, ''In situ'' This species can be confused with the purple sea urchin ''Paracentrotus lividus'', but the latter is never really black (though often very dark), has more dishevelled spines of many lengths, covers itself with debris, has spine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stomopneustoida
Stomopneustoida is an order of echinoderms belonging to the class Echinoidea Sea urchins () are spiny, globular echinoderms in the class Echinoidea. About 950 species of sea urchin live on the seabed of every ocean and inhabit every depth zone from the intertidal seashore down to . The spherical, hard shells ( tests) .... Families: * Glyptocidaridae * Stomechinidae * Stomopneustidae References Echinoidea Echinoderm orders {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temnopleuridea
Temnopleuridea is an infraorder of sea urchins in the order Camarodonta. They are distinguished from other sea urchins by the presence of large fused plates on top of the feeding lantern. The test is usually sculpted to some degree, and has perforated tubercles. Taxonomy According to 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 ...: * Family Glyphocyphidae Duncan, 1889 † * Family Temnopleuridae A. Agassiz, 1872 * Family Trigonocidaridae Mortensen, 1903b * Family Zeuglopleuridae Lewis, 1986 † Bibliography * * References Extant Late Cretaceous first appearances {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinidea (order)
Echinoida is an order of sea urchins in the class Echinoidea. They are distinguished from other sea urchins by simultaneously possessing both an un-sculpted test and a feeding lantern with large plates fused across the top of each pyramid. Taxonomy Order Echinoida * family Echinidae Gray, 1825 * family Echinometridae Gray, 1825 * family Parasaleniidae * family Strongylocentrotidae Gregory, 1900 Image:Paracentrotus lividus profil.JPG, ''Paracentrotus lividus'' ( Echinidae) Image:Echinometra lucunter.jpg, ''Echinometra lucunter'' ( Echinometridae) Image:Urchinhand 300.jpg, ''Strongylocentrotus franciscanus'' ( Strongylocentrotidae) See also *''Colobocentrotus atratus'' - Shingle urchin *'' Echinus acutus'' - White sea urchin *''Echinus esculentus'' - Common sea urchin *'' Echinus tylodes'' *''Evechinus chloroticus'' - New Zealand sea urchin *'' Heterocentrotus mammillatus'' - Red pencil urchin *'' Heterocentrotus trigonarius'' - Slate pencil urchin *''Loxechinus albus ''L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
