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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 : * suborder Brissidina Stockley, Smith, Littlewood, Lessios & MacKenzie-Dodds, 2005 ** family Asterostomatidae Pictet, 1857 ** family Brissidae Gray, 1855 ** family Palaeotropidae Lambert, 1896 ** super-family Spatangidea Fischer, 1966 *** family Eupatagidae Lambert, 1905 *** family ... [...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 (biology), 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 (Norway), North Cape in Norway southwards to S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loveniidae
Loveniidae is a family of heart urchins in the order Spatangoida. Description and characteristics These sea urchins are called "heart urchins" due to their specific shape, looking like a heart when seen from below (more or less depending on the genus). The mouth is located between the two cheeks, and the anus below the tip. Genera According to the World Register of Marine Species: * genus '' Araeolampas'' Serafy, 1974 * genus '' Atelospatangus'' Koch, 1885 † * genus ''Breynia'' Desor, in Agassiz & Desor, 1847 * genus '' Chuniola'' Gagel, 1903 † * sub-family Echinocardiinae Cooke, 1942 ** genus ''Echinocardium'' Gray, 1825 * genus '' Gualtieria'' Desor, in Agassiz & Desor, 1847 † * genus '' Hemipatagus'' Desor, 1858 † * genus '' Laevipatagus'' Noetling, 1885 † * genus '' Lovenia'' Desor, in Agassiz & Desor, 1847 * genus '' Pseudolovenia'' A. Agassiz & H.L. Clark, 1907b * genus '' Semipetalion'' Szörényi, 1963 † * genus '' Spatangomorpha'' Boehm, 1882 † Image: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prenasteridae
Prenasteridae is a family of echinoderms belonging to the order Spatangoida. Genera: * ''Agassizia ''Agassizia'' is a genus of sea urchin of the family Prenasteridae. The species was first scientifically described in 1869 by Achille Valenciennes Achille Valenciennes (9 August 1794 – 13 April 1865) was a French zoologist. Valenciennes was ...'' 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 ... [...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 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 urc .... 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 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 urc .... Genera: * '' Paleopneustes'' Agassiz, 1873 * '' Peripatagus'' Koehler, 1895 * '' Plesiozonus'' de Meijere, 1903 References Spatangoida {{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 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 urc .... Genera: * '' Ditremaster'' Munier-Chalmas, 1885 * '' Heterobrissus'' Manzoni & Mazzetti, 1878 * '' Palaeostoma'' Lovén, 1872 * '' Palaeostoma'' Wright, 1868 * '' 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 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 urc .... Genera Genera: * '' Brissopneustes'' * '' Cyclaster'' Cotteau, 1856 * '' Diplodetus'' Schlüter, 1900 References Spatangoida Echinoderm families {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeropsidae
Aeropsidae is a family of echinoderms belonging to the order Spatangoida. It contains one extant genus. There are also eight extinct genera, most of which fall in the subfamily Corasterinae. History Initially, a large number of genera were included on the basis of their apetaloid Ambulacrum (anatomy), ambulacra. This, however, resulted in the inclusion of a number of unrelated genera some of which are Holasteridae, holasteroid, and others that are Spatangidae, spatangoid. Later, Mortensen included just two genera - ''Aceste'' and ''Aeropsis''. The two forms are very different in test architecture. Aceste is now considered to be an apetaloid derivative of ''Proraster'' and is nor believed to be closely related to Aeropsidae. Genera The following genera are recognised: Subfamily Corasterinae Lambert & Thiéry, 1924 * † ''Coraster'' Cotteau, 1887 * † ''Cordastrum'' Nisiyama, 1968 * † ''Cottreaucorys'' Lambert, 1920 * † ''Homoeaster'' Pomel, 1883 * † ''Lambertiaster'' G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemiasteridae
Hemiasteridae is a family of echinoderms belonging to the order Spatangoida 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 urc .... Genera Genera: * '' Bolbaster'' Pomel, 1869 * '' Cheopsia'' Fourtau, 1909 * '' Hemiaster'' Agassiz, 1847 References Spatangoida Echinoderm families {{echinoderm-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spatangidae
The Spatangidae are a family of 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 urch ...s. There are three recognised genera within the family; '' Granopatagus'', '' Plethotaenia'', and '' Spatangus''. Additionally, ''Prospatangus'' was previously a recognised genus within the Spatangidae, but is now accepted as part of the genus ''Spatangus''. The Spatangidae are marine heart urchins that feed on subsurface deposits and graze. References Spatangoida Echinoderm families {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |