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Heart Urchin
The heart urchins or Spatangoida are an order of sea urchins. Their body is a somewhat elongated oval in form, and is distinguished by the mouth being placed towards one end of the animal, and the anus towards the other. As a result, heart urchins, unlike most other sea urchins, are bilaterally symmetrical, and have a distinct anterior surface. The presence and position of the mouth and anus typically give members of this group the distinct "heart" shape from which they get their name. Heart urchins have no feeding lantern, and often have petaloids sunk into grooves. They are a relatively diverse order, with a number of varying species. 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 catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ... : * suborder Brissidina Stockley, Smi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spatangus Purpureus
''Spatangus purpureus'', commonly known as the purple heart urchin, is a species of sea urchin in the family Spatangidae. It is found in the eastern Atlantic Ocean and the Mediterranean Sea, where it lives immersed in the sediment. Description ''Spatangus purpureus'' has a somewhat flattened test with a flat oral surface (underside) and a domed aboral surface (upper side). It is an irregular animal and not radially symmetric as are most sea urchins; there is a notch at the front and the mouth is forward pointing, while the anus is at the rear. It can grow to a length of and a width of . The test is reddish-purple and there are two types of spines, many short, silky, purplish spines up to long, and fewer beige chitinous spines long. Distribution and habitat ''Spatangus purpureus'' is native to the eastern Atlantic Ocean, the Mediterranean Sea and the English Channel. Its range extends from Iceland and the North Cape in Norway southwards to Senegal. It lives immersed in coarse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brissus Latecarinatus
''Brissus latecarinatus'' is a species of sea urchins of the family Brissidae. Its armour is covered with spines. ''Brissus latecarinatus'' was first scientifically described in 1778 by Nathanael Gottfried Leske. Distribution It is distributed throughout the Indo-Pacific in tropical waters of the Indian Ocean, Western Pacific, and all oceans connecting the two bodies of water. It can be found on reefs at depths of up to . Description It is covered in short spines that are brown, pink, and green in color. It has a crescent shaped mouth and a large anal opening underneath. Its surface displays a five-part petaloid pattern. Specimens of a larger size reach lengths of . Life cycle Like other species of the Echinoidea class, this species is gonochoric. It uses external fertilization. Eggs are retained on the peristome, near the periproct, or deep inside the concavities on the petaloids during the typical practice of brooding. Embryos grow into planktotrophic larvae (echinopla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toxasteridae
''Toxasteridae'' is an extinct family of sea urchins. These slow-moving shallow infaunal deposit feeder-detritivores lived during the Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ... period, from 145.5 to 61.7 Ma. Genera *'' Adytaster'' *'' Aphelaster'' *'' Douvillaster'' *'' Enallopneustes'' *'' Heteraster'' *'' Isaster'' *'' Isomicraster'' *'' Macraster'' *'' Mokotibaster'' *'' Palmeraster'' *'' Polydesmaster'' *'' Toxaster'' References Spatangoida Cretaceous first appearances Cretaceous extinctions Prehistoric echinoderm families {{paleo-echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schizasteridae
Schizasteridae is a family of echinoderms belonging to the order Spatangoida. Genera: *'' Abatus'' *'' Aceste'' *'' Aguayoaster'' *'' Aliaster'' *'' Brachybrissus'' *'' Brisaster'' *'' Caribbaster'' *'' Cestobrissus'' *'' Diploporaster'' *'' Gregoryaster'' *'' Hemifaorina'' *'' Hypselaster'' *'' Lambertona'' *'' Linthia'' *'' Moira'' *'' Moiropsis'' *'' Opissaster'' *''Ova , abbreviated as OVA and sometimes as OAV (original animation video), are Japanese animated films and special episodes of a series made specially for release in home video formats without prior showings on television or in theaters, though the ...'' *'' Protenaster'' *'' Prymnaster'' *'' Schizaster'' *'' Schizopneustes'' *'' Tripylaster'' References {{Taxonbar, from=Q3467340 Echinoderm families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prenasteridae
Prenasteridae is a family of echinoderms belonging to the order Spatangoida The heart urchins or Spatangoida are an order (biology), order of sea urchins. Their body is a somewhat elongated oval in form, and is distinguished by the mouth being placed towards one end of the animal, and the anus towards the other. As a re .... Genera: * '' Agassizia'' Valenciennes, 1846 * '' Anisaster'' Pomel, 1886 * '' Antiquobrissus'' Szörényi, 1955 * '' Cagaster'' Nisiyama, 1968 * '' Eoagassizia'' Grant & Hertlein, 1938 * '' Holcopneustes'' Cotteau, 1889 * '' Peribrissus'' Pomel, 1869 * '' Prenaster'' Desor, 1853 * '' Pseudolinthia'' * '' Tripylus'' Philippi, 1845 References {{Taxonbar, from=Q16911328 Spatangoida Echinoderm families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pericosmidae
Pericosmidae is a family of echinoderms belonging to the order Spatangoida The heart urchins or Spatangoida are an order (biology), order of sea urchins. Their body is a somewhat elongated oval in form, and is distinguished by the mouth being placed towards one end of the animal, and the anus towards the other. As a re .... Genera: * '' Faorina'' Gray, 1851 * '' Pericosmus'' L.Agassiz, 1847 * '' Platyspatus'' Pomel, 1883 * '' Sinaechinus'' References Spatangoida Echinoderm families {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleopneustidae
Paleopneustidae is a family of echinoderms belonging to the order Spatangoida The heart urchins or Spatangoida are an order (biology), order of sea urchins. Their body is a somewhat elongated oval in form, and is distinguished by the mouth being placed towards one end of the animal, and the anus towards the other. As a re .... Genera: * '' Paleopneustes'' Agassiz, 1873 * '' Peripatagus'' Koehler, 1895 * '' Plesiozonus'' de Meijere, 1903 References Spatangoida Echinoderm families {{Echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaeostomatidae
Palaeostomatidae is a family of echinoderms belonging to the order Spatangoida The heart urchins or Spatangoida are an order (biology), order of sea urchins. Their body is a somewhat elongated oval in form, and is distinguished by the mouth being placed towards one end of the animal, and the anus towards the other. As a re .... Genera: *†Ditremaster' Munier-Chalmas, 1885 *'' Palaeostoma'' Lovén in A. Agassiz, 1872 *'' Sarsiaster'' Mortensen, 1950 *†'' Trachyaster'' Pomel, 1869 References Spatangoida Echinoderm families {{Echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micrasteridae
Micrasteridae is a family of echinoderms belonging to the order Spatangoida. Genera Genera: * '' Brissopneustes'' * '' Cyclaster'' Cotteau, 1856 * '' Diplodetus'' Schlüter, 1900 * ''Micraster ''Micraster'' is an extinct genus of echinoids from the Late Cretaceous to the early Eocene. Its remains have been found in Africa, Antarctica, Europe, and North America. Micraster was an infaunal echinoid living in a burrow below the sediment ...'' References Spatangoida Echinoderm families {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |