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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 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 ** superfamily Spatangoidea Fischer, 1966 *** family Eupatagidae Lambert, 1905 * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maretiidae
Maretiidae is a family of echinoderms belonging to the order Spatangoida. Genera Genera: * ''Amoraster'' McNamara & Ah Yee, 1989 * ''Granobrissoides'' Lambert, 1920 * ''Gymnopatagus'' Döderlein, 1901 * ''Hemimaretia'' Mortensen, 1950 * ''Homolampas'' A.Agassiz, 1874 * ''Maretia'' Gray, 1855 * ''Mariania'' Airaghi, 1901 * ''Mazettia'' Lambert & Thiéry, 1915 * ''Murraypneustes'' Holmes, Yee & Krause, 2005 * ''Nacospatangus'' A.Agassiz, 1873 * ''Pycnolampas'' A.Agassiz & H.L.Clark, 1907 * ''Spatagobrissus'' H.L.Clark, 1923 * ''Tripatagus'' Zachos, 2012 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] |
Aeropsidae
Aeropsidae 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 .... 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 ambulacra. This, however, resulted in the inclusion of a number of unrelated genera some of which are holasteroid, and others that are 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: ... [...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 (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 ....Moore, R.C. (ed.). 1966-1978. Treatise on invertebrate paleontology. Parts S-U. Echinodermata. 2 Volumes. Geological Society of America and Univer-sity of Kansas, Kansas. Genera Genera: * '' Bolbaster'' Pomel, 1869 * '' Cheopsia'' Fourtau, 1909 * '' Hemiaster'' Agassiz, 1847 * '' Palhemiaster'' Lambert, 1916 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] |
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] |
Macropneustidae
Macropneustidae 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: * '' Archaechinus'' Kier, 1957 * '' Argopatagus'' A.Agassiz, 1879 * '' Crucibrissus'' Lambert, 1920 * '' Hypsopatagus'' Pomel, 1883 * '' Lajanaster'' * '' Macropneustes'' L.Agassiz, 1847 * '' Phrissocystis'' A.Agassiz, 1898 References {{Taxonbar, from=Q17634558 Spatangoida Echinoderm families ... [...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 the specific shape of their test, 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 is below the tip. Genera According to the World Register of Marine Species: * genus '' Araeolampas'' Serafy, 1974 * genus '' Atelospatangus'' Koch, 1885 † * genus ''Breynia ''Breynia'' is a genus in the flowering plant family Phyllanthaceae, first described in 1776. It is native to Southeast Asia, China, Réunion, the Indian Subcontinent, Papuasia and Australia. The name ''Breynia'' is a conserved name, it is recog ...'' Desor, in Agassiz & Desor, 1847 * genus '' Chuniola'' Gagel, 1903 † * subfamily Echinocardiinae Cooke, 1942 ** genus '' Echinocardium'' Gray, 1825 * genus '' Gualtieria'' Desor, in Agassiz & Desor, 1847 † * genus '' Hemipatagus'' Deso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurypatagidae
Eurypatagidae 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: * '' Elipneustes'' Koehler, 1914 * '' Eurypatagus'' Mortensen, 1948 * '' Linopneustes'' A.Agassiz, 1881 * '' Paramaretia'' Mortensen, 1950 * '' Platybrissus'' Grube, 1866 References Spatangoida Echinoderm families {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eupatagidae
Eupatagidae 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: * '' Brissoides'' Schinz, 1825 * '' Eupatagus'' Agassiz, 1847 * '' Herreraster'' * '' Heterospatangus'' * '' Megapatagus'' * '' Zanolettiaster'' References Spatangoida Echinoderm families {{echinoidea-stub ... [...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] |
Palaeotropidae
Palaeotropidae 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: * '' Kermabrissoides'' Baker, 1998 * '' Palaeobrissus'' A.Agassiz, 1883 * '' Palaeotropus'' Lovén, 1874 * '' Paleotrema'' Koehler, 1914 * '' Scrippsechinus'' Allison, Durham & Mintz, 1967 References Spatangoida Echinoderm families {{Echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |