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Murrayonida
The Murrayonida are an order of sea sponges in the subclass Calcinea. Taxonomy The order consists of four known species, in three families: Family Murrayonidae Dendy & Row, 1913 * '' Murrayona phanolepis'' Kirkpatrick, 1910 - discovered by C. W. Andrews on Christmas Island Christmas Island, officially the Territory of Christmas Island, is an Australian external territory comprising the island of the same name. It is located in the Indian Ocean, around south of Java and Sumatra and around north-west of the ... and the species name proposed in honor of Sir John Murray, who financed the Christmas Island expedition, and the corresponding name was later given to the order. Family Lelapiellidae Borojevic, Boury-Esnault & Vacelet, 1990 * '' Lelapiella incrustans'' Vacelet, 1977 * '' Lelapiella sphaerulifera'' Vacelet, 1977 Family Paramurrayonidae Vacelet, 1967 * '' Paramurrayona corticata'' Vacelet, 1967 Description Murrayonida are distinguished from other Calcinea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcinea
The Calcinea are a subclass (biology), subclass of the calcareous sponges. Its phylum is Porifera and class is Calcarea. Branching is usually dichotomous branching, dichotomous or umbellate with anastomoses, which gives rise to reticulate growths on stalks in adults. Most varieties are coral red or sulphur yellow. , Retrieved 2-25-2016 References Calcinea, Sponge subclasses {{Calcarea-stub ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Murray (oceanographer)
Sir John Murray (3 March 1841 – 16 March 1914) was a pioneering Canadian-born British oceanographer, marine biologist and limnologist. He is considered to be the father of modern oceanography. Early life and education Murray was born at Cobourg, Canada West (now Ontario) on 3 March 1841. He was the second son of Robert Murray, an accountant, and his wife Elizabeth Macfarlane. His parents had emigrated from Scotland to Ontario in about 1834. He went to school in London, Ontario and later to Cobourg College. In 1858, at the age of 17 he returned to Scotland to live with his grandfather, John Macfarlane, and continue his education at Stirling High School. In 1864 he enrolled at University of Edinburgh to study medicine however he did not complete his studies and did not graduate. In 1868 he joined the whaling ship, ''Jan Mayen'', as ship's surgeon and visited Spitsbergen and Jan Mayen Island. During the seven-month trip, he collected marine specimens and recorded ocean curren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Vacelet
Jean Vacelet is a French marine biologist who specialises in the underwater fauna of the Mediterranean. After earning his licence at the Faculté des Sciences de Marseille and learning to dive in 1954, he specialised in the study of sponges at the Marine station of Endoume, and there he has stayed faithful to both sponges and place for more than half a century. His research has included all aspects of sponges: taxonomy, habitat, biology, anatomy, their bacterial associations, and their place in the evolution of multi-celled animals. He has studied them not only in the Mediterranean but in the Indian Ocean and the Pacific. Exploration of underwater grottoes, together with Jacques Laborel and Jo Hamelin, revealed the existence of sponges dating from very ancient geological periods and the unexpected existence of carnivorous sponges, and surprisingly, the grottoes in some ways mimicked life at much greater depths. He earned one doctorate in 1958 and his doctorat ès-sciences, unde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Sponge
Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicellular, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christmas Island
Christmas Island, officially the Territory of Christmas Island, is an Australian external territory comprising the island of the same name. It is located in the Indian Ocean, around south of Java and Sumatra and around north-west of the closest point on the Australian mainland. It lies northwest of Perth and south of Singapore. It has an area of . Christmas Island had a population of 1,692 residents , the majority living in settlements on the northern edge of the island. The main settlement is Flying Fish Cove. Historically, Asian Australians of Chinese, Malay, and Indian descent formed the majority of the population. Today, around two-thirds of the island's population is estimated to have Straits Chinese origin (though just 22.2% of the population declared a Chinese ancestry in 2021), with significant numbers of Malays and European Australians and smaller numbers of Straits Indians and Eurasians. Several languages are in use, including English, Malay, and various ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leucettidae
Leucettidae is a family of sea sponges in the subclass Calcinea, first described by Max Walker de Laubenfels Max Walker de Laubenfels (1894–1960) was an American spongiologist. He received his undergraduate degree from Oberlin College and his doctorate from Stanford University. He was among the most prolific identifiers of new species of Caribbean ... in 1936. References Calcinea {{calcarea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge
Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicellular, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
