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Centrostephanus Rodgersii
''Centrostephanus rodgersii'' is a species of sea urchin of the family Diadematidae The Diadematidae are a family of sea urchins. Their tests are either rigid or flexible and their spines are long and hollow. * '' Astropyga'' Gray, 1825 **'' Astropyga radiata'' ( Leske, 1778), extant **'' Astropyga pulvinata'' (Lamarck, 1816), .... Description It is a big, dark-purple sea urchin, with long and slender spines, reflecting a green tinge in the light. The shell can be reddish. File:Centrostephanus rodgersii and Comanthus trichoptera P2164030.JPG File:Centrostephanus rodgersii P2164028.JPG File:Centrostephanus rodgersii P2164058.JPG File:Pseudolabrus rubicundus and Centrostephanus rodgersii P2153827.JPG Distribution and habitat This sea urchin can be found in New Zealand and south-east Australia. References Diadematidae Animals described in 1863 {{Echinoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Urchin
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) of sea urchins are round and spiny, ranging in diameter from . Sea urchins move slowly, crawling with tube feet, and also propel themselves with their spines. Although algae are the primary diet, sea urchins also eat slow-moving (sessile) animals. Predators that eat sea urchins include a wide variety of fish, starfish, crabs, marine mammals. Sea urchins are also used as food especially in Japan. Adult sea urchins have fivefold symmetry, but their pluteus larvae feature bilateral (mirror) symmetry, indicating that the sea urchin belongs to the Bilateria group of animal phyla, which also comprises the chordates and the arthropods, the annelids and the molluscs, and are found in every ocean and in every climate, from the tropics to the pol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diadematidae
The Diadematidae are a family of sea urchins. Their tests are either rigid or flexible and their spines are long and hollow. * '' Astropyga'' Gray, 1825 **'' Astropyga radiata'' ( Leske, 1778), extant **'' Astropyga pulvinata'' (Lamarck, 1816), extant **'' Astropyga magnifica'' (Clark, 1934), extant *'' Centrostephanus'' Peters, 1855 **'' Centrostephanus asteriscus'' ( Agassiz & Clark, 1907), extant **'' Centrostephanus coronatus'' ( Verrill, 1867), extant **'' Centrostephanus fragile'' (Wiltshire in Wright, 1882), Santonian, Maastrichtian, Danian **'' Centrostephanus longispinus'' ( Philippi, 1845), extant **'' Centrostephanus nitidus'' (Koehler, 1927), extant **'' Centrostephanus rodgersii'' ( Agassiz, 1863), extant *'' Chaetodiadema'' Mortensen, 1903 **'' Chaetodiadema granulatum'' ( Mortensen, 1903), extant **'' Chaetodiadema keiense'' ( Mortensen, 1903), extant **'' Chaetodiadema tuberculatum'' (Clark, 1909), extant *'' Diadema'' Gray, 1825 **'' Diadema palmeri'' ( Baker, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
