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Echinometra Vanbrunti
''Echinometra'' is a genus of sea urchins in the Family (biology), family Echinometridae. Species The following species are listed in the World Echinoidea Database: References {{Taxonbar, from=Q3046974 Echinometridae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Mathaei
''Echinometra mathaei'', the burrowing urchin, is a species of sea urchin in the family Echinometridae. It occurs in shallow waters in the Indo-Pacific region. The type locality is Mauritius. Description ''Echinometra mathaei'' grows to a test diameter of about . The colour is quite variable but the test is usually a dark colour. The spines are sometimes green and purple with purple tips or entirely green with purple tips but this sea urchin can be distinguished from other species by a characteristic pale ring at the base of each spine. Echinometra mathaei (3 polymorphes).jpg, ''Echinometra mathaei'' in their holes in a rock. Reef4081 - Flickr - NOAA Photo Library.jpg Echinometra_mathaei_Reunion.JPG, ''idem''. Echinometra mathaei MHNT Both sides.jpg, The two sides of the same dried specimen ( MHNT) Distribution ''Echinometra mathaei'' is found on reefs in tropical parts of the Indo-Pacific Ocean at depths down to . Its range extends from Madagascar, the East African c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Lucunter
''Echinometra lucunter'', the rock boring urchin, is a species of sea urchin in the family Echinometridae. It is found in very shallow parts of the western Atlantic Ocean and the Caribbean Sea. Description ''Echinometra lucunter'' has an elliptical rather than a round test (shell). It can grow to a diameter of about and grows larger at the extreme north and south ends of its range than it does in the centre. It has moderately short spines with wide bases and sharp tips. The colour of the test varies from black to deep brownish-red, often being more ruddy on its aboral (upper) surface than on its oral (lower) surface. The spines are usually black. Distribution and habitat ''Echinometra lucunter'' is common throughout the Caribbean Sea and also occurs in Florida, Bermuda and the South American coast as far south as Brazil. It occurs on shallow rocky areas and on coral reefs usually at depths of or less but occasionally in deeper water down to about . It is sometimes found am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Viridis
''Echinometra viridis'', the reef urchin, is a species of sea urchin in the Family (biology), family Echinometridae. It is found on reefs in very shallow parts of the western Atlantic Ocean and the Caribbean Sea. Description The reef urchin has an elliptical reddish brown Test (biology), test (shell) covered with medium length spines. These are greenish in colour with paler bases and darker, often violet, tips. This urchin grows to a diameter of with the longest spines being . It looks very similar to the rock-boring urchin ''Echinometra lucunter'', but the dark tips and the greater length of the spines are distinctive. Distribution The reef urchin is found on reefs in the Caribbean Sea from southern Florida to Venezuela at depths down to about . It is not as common as the rock-boring urchin and seems to be absent from the West Indies to the east of the Virgin Islands. Biology The reef urchin conceals itself in crevices or under boulders. It emerges at night to feed by gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Viridis (Reef Urchin)
''Echinometra viridis'', the reef urchin, is a species of sea urchin in the family Echinometridae. It is found on reefs in very shallow parts of the western Atlantic Ocean and the Caribbean Sea. Description The reef urchin has an elliptical reddish brown test (shell) covered with medium length spines. These are greenish in colour with paler bases and darker, often violet, tips. This urchin grows to a diameter of with the longest spines being . It looks very similar to the rock-boring urchin ''Echinometra lucunter'', but the dark tips and the greater length of the spines are distinctive. Distribution The reef urchin is found on reefs in the Caribbean Sea from southern Florida to Venezuela at depths down to about . It is not as common as the rock-boring urchin and seems to be absent from the West Indies to the east of the Virgin Islands. Biology The reef urchin conceals itself in crevices or under boulders. It emerges at night to feed by grazing on algae with its five teet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Agassiz
Alexander Emmanuel Rodolphe Agassiz (December 17, 1835March 27, 1910), son of Louis Agassiz and stepson of Elizabeth Cabot Agassiz, was an American scientist and engineer. Biography Agassiz was born in Neuchâtel, Switzerland and immigrated to the United States with his parents, Louis and Cecile (Braun) Agassiz, in 1846. He graduated from Harvard University in 1855, subsequently studying engineering and chemistry, and taking the degree of Bachelor of Science at the Lawrence Scientific School of the same institution in 1857; in 1859 became an assistant in the United States Coast Survey. Thenceforward he became a specialist in marine ichthyology. Agassiz was elected a Fellow of the American Academy of Arts and Sciences in 1862. Up until the summer of 1866, Agassiz worked as assistant curator in the museum of natural history that his father founded at Harvard. E. J. Hulbert, a friend of Agassiz's brother-in-law, Quincy Adams Shaw, had discovered a rich copper lode known as the C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinometra Vanbrunti
''Echinometra'' is a genus of sea urchins in the Family (biology), family Echinometridae. Species The following species are listed in the World Echinoidea Database: References {{Taxonbar, from=Q3046974 Echinometridae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Purple Sea Urchin
California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the most populated subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento is the state's capital, while Los Angeles is the most populous city in the state and the second most populous city in the country. San Francisco is the second most densely populated major city in the country. Los Angeles County is the country's most populous, while San Bernardino County is the largest county by area in the country. California borders Oregon to the north, Nevada and Arizona to the east, the Mexi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henri Marie Ducrotay De Blainville
Henri Marie Ducrotay de Blainville (; 12 September 1777 – 1 May 1850) was a French zoologist and anatomist. Life Blainville was born at Arques, near Dieppe. As a young man he went to Paris to study art, but ultimately devoted himself to natural history. He attracted the attention of Georges Cuvier, for whom he occasionally substituted as lecturer at the Collège de France and at the Athenaeum Club, London. In 1812 he was aided by Cuvier in acquiring the position of assistant professor of anatomy and zoology in the Faculty of Sciences at Paris. Eventually, relations between the two men soured, a situation that ended in open enmity. In 1819, Blainville was elected a member of the American Philosophical Society in Philadelphia. In 1825 he was admitted a member of the French Academy of Sciences; and in 1830 he was appointed to succeed Jean-Baptiste Lamarck in the chair of natural history at the museum. Two years later, on the death of Cuvier, he obtained the chair of comparative a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seaurchin
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 pola ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
10th Edition Of Systema Naturae
The 10th edition of ''Systema Naturae'' is a book written by Swedish naturalist Carl Linnaeus and published in two volumes in 1758 and 1759, which marks the starting point of zoological nomenclature. In it, Linnaeus introduced binomial nomenclature for animals, something he had already done for plants in his 1753 publication of '' Species Plantarum''. Starting point Before 1758, most biological catalogues had used polynomial names for the taxa included, including earlier editions of ''Systema Naturae''. The first work to consistently apply binomial nomenclature across the animal kingdom was the 10th edition of ''Systema Naturae''. The International Commission on Zoological Nomenclature therefore chose 1 January 1758 as the "starting point" for zoological nomenclature, and asserted that the 10th edition of ''Systema Naturae'' was to be treated as if published on that date. Names published before that date are unavailable, even if they would otherwise satisfy the rules. The only ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . Linnaeus was born in Råshult, the countryside of Småland, in southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his ' in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he continued to collect an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
