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Cidaridae - Radiola
Cidaridae is a family of sea urchins in the order Cidaroida. Description and characteristics Cidarid sea urchins are characterized by their stout skeleton : the test is thick and hard, with massive perforated tubercles (never crenulated) surrounded by a crown of secondary tubercles, but no primary tubercles in the interambulacra regions. These tubercles hold massive spines, thick, strong and often very long, and showing sometimes odd shapes (thorny spines, fans, clubs, Christmas trees...). The order Cidaroida is the basalmost of current sea urchins, and most of the species included in this family are abyssal, even if a handful of species remain quite common in tropical shallow waters, like ''Eucidaris'' or ''Phyllacanthus''. Genera According to the World Register of Marine Species (WoRMS), the following genera are included in this family * Subfamily '' Cidarinae'' (Mortensen, 1928a) ** Genus ''Calocidaris'' (H.L. Clark, 1907) ** Genus '' Centrocidaris'' (A. Agassiz, 1904) * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cidaris Cidaris
''Cidaris cidaris'' is a species of sea urchin commonly known as the long-spine slate pen sea urchin. It is found in deep water in the eastern Atlantic Ocean and the Mediterranean Sea. Description ''Cidaris cidaris'' has a small central test from which project a number of long, blunt, widely separated primary spines and a dense covering of short secondary spines. The primaries are pale grey, tipped with green and the secondaries are pale green. The test has a diameter of to and the spines are twice as long as this. The sea urchin often has bits of algae, sponge or other organisms adhering to the spines. Distribution ''Cidaris cidaris'' is found in the eastern Atlantic Ocean and the Mediterranean Sea in deep water on coral, rock and gravel bottoms. Its range extends from Cape Verde, the Azores and the Canary Islands northwards to the Faroe Islands and Norway. It is also found on knolls and seamounts at depths down to about . Biology ''Cidaris cidaris'' feeds on sponges, sea fan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goniocidaris
''Goniocidaris'' is a genus of sea urchins (Echinoidea) in the family Cidaridae and typical of the subfamily Goniocidarinae. Extant species are mostly found in Indo-Pacific The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the ... seas, often living at depth. Species ;subgenus ''Aspidocidaris'' Mortensen, 1928 * '' Goniocidaris alba'' Mortensen, 1928 * '' Goniocidaris australiae'' Mortensen, 1928 * '' Goniocidaris clypeata'' Döderlein, 1885 * '' Goniocidaris crassa'' Mortensen, 1928 * '' Goniocidaris fimbriata'' (De Meijere, 1904) * '' Goniocidaris parasol'' Fell, 1958 * '' Goniocidaris sibogae'' Mortensen, 1928 ;subgenus ''Cyrtocidaris'' Mortensen, 1927 * '' Goniocidaris tenuispina'' Mortensen, 1927 ;subgenus ''Discocidaris'' Döderlein, 1885 * '' Goniocidaris mikado'' (Döderlein ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austrocidaris
''Austrocidaris'' is a genus of sea urchins belonging to the family Cidaridae Cidaridae is a family of sea urchins in the order Cidaroida. Description and characteristics Cidarid sea urchins are characterized by their stout skeleton : the test is thick and hard, with massive perforated tubercles (never crenulated) surr .... The species of this genus are found in southernmost America and New Zealand. Species: *'' Austrocidaris canaliculata'' *'' Austrocidaris lorioli'' *'' Austrocidaris operta'' *'' Austrocidaris pawsoni'' *'' Austrocidaris seymourensis'' *'' Austrocidaris spinulosa'' References Cidaridae Cidaroida genera {{echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
