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Ectyonopsis Flabellata
''Ectyonopsis'' is a genus of demosponges in the family Myxillidae. They are mostly known from the waters surrounding Australia and from the Southern Ocean. Description This species was originally created for ''Ectyonopsis ramosa'', an Australian species with acanthostyles (spiny styles (spicules with end pointed and the other rounded)) and acanthostrongyles (spiny strongyles (megascleres with both ends rounded)) that form a choanosomal isotropic structure. The genus ''Ectyonancora'', which contained two South African species with acanthostyles, acanthostrongyles, ectosomal tornotes (spicules with both ends sharply pointed), and isochelae spicules (spicules with both ends alike) with protruding processes, was later synonymised with this genus. All the species in this genus share several features. The tornotes are smooth with triangular/sharply pointed ends. Thick, heavily spined styles are isotopically reticulated and are covered by thick acanthostyles. The microscleres are r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectyonopsis Ramosa
''Ectyonopsis ramosa'' is a species of poriferan of the genus ''Ectyonopsis''. ''E. ramosa'' was described by Herbert James Carter Herbert James Carter (23 April 1858 – 16 April 1940) was an English-born Australian schoolmaster and entomologist. __NOTOC__ Early life Carter was born at Marlborough, Wiltshire, England, the son of James Carter, farmer, and his wife Mary Ann, ... in 1883. References Demospongiae Animals described in 1983 {{demosponge-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbert James Carter
Herbert James Carter (23 April 1858 – 16 April 1940) was an English-born Australian schoolmaster and entomologist. __NOTOC__ Early life Carter was born at Marlborough, Wiltshire, England, the son of James Carter, farmer, and his wife Mary Ann, ''née'' Freeman. He was educated at Aldenham school, Hertfordshire, and at Jesus College, Cambridge, where he graduated B.A. in 1881. He was also a keen cricketer. Career Migrating to Australia (arriving on the ''Potosi '' on 19 February 1882) Carter was made assistant mathematics master at Sydney Grammar School, later becoming senior mathematics master. In 1902 he became principal of Ascham girls' school until 1914. During World War I, Carter became a founding member of the executive committee of the Australian branch of the British Red Cross Society. Carter became interested in the study of the Coleoptera (beetles and weevils), he joined the Linnean Society of New South Wales and was a member of its council from 1920 to 1939, and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Demosponges
Demosponges (Demospongiae) are the most diverse class in the phylum Porifera. They include 76.2% of all species of sponges with nearly 8,800 species worldwide (World Porifera Database). They are sponges with a soft body that covers a hard, often massive skeleton made of calcium carbonate, either aragonite or calcite. They are predominantly leuconoid in structure. Their "skeletons" are made of spicules consisting of fibers of the protein spongin, the mineral silica, or both. Where spicules of silica are present, they have a different shape from those in the otherwise similar glass sponges. Some species, in particular from the Antarctic, obtain the silica for spicule building from the ingestion of siliceous diatoms. The many diverse orders in this class include all of the large sponges. Most are marine dwellers, but one order (Spongillida) live in freshwater environments. Some species are brightly colored, with great variety in body shape; the largest species are over ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myxillidae
Myxillidae is a family of marine demosponge Demosponges (Demospongiae) are the most diverse class in the phylum Porifera. They include 76.2% of all species of sponges with nearly 8,800 species worldwide (World Porifera Database). They are sponges with a soft body that covers a har ...s. Genera *'' Damiriopsis'' Burton, 1928 *'' Ectyonopsis'' Carter, 1883 *'' Hymenancora'' Lundbeck, 1910 *'' Melonanchora'' Carter, 1874 *'' Myxilla'' Schmidt, 1862 *'' Plocamiancora'' Topsent, 1927 *'' Psammochela'' Dendy, 1916 *'' Stelodoryx'' Topsent, 1904 References Poecilosclerida {{demosponge-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's List of countries and dependencies by area, sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a Megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and climates, with Deserts of Australia, deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approximately Early human migrations#Nearby Oceania, 65,000 years ago, during the Last Glacial Period, last i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Ocean
The Southern Ocean, also known as the Antarctic Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60° S latitude and encircling Antarctica. With a size of , it is regarded as the second-smallest of the five principal oceanic divisions: smaller than the Pacific, Atlantic, and Indian oceans but larger than the Arctic Ocean. Over the past 30 years, the Southern Ocean has been subject to rapid climate change, which has led to changes in the marine ecosystem. By way of his voyages in the 1770s, James Cook proved that waters encompassed the southern latitudes of the globe. Since then, geographers have disagreed on the Southern Ocean's northern boundary or even existence, considering the waters as various parts of the Pacific, Atlantic, and Indian oceans, instead. However, according to Commodore John Leech of the International Hydrographic Organization (IHO), recent oceanographic research has discovered the importance of Southern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge Spicule
Spicules are structural elements found in most sponges. The meshing of many spicules serves as the sponge's skeleton and thus it provides structural support and potentially defense against predators. Sponge spicules are made of calcium carbonate or silica. Large spicules visible to the naked eye are referred to as megascleres, while smaller, microscopic ones are termed microscleres. The composition, size, and shape of spicules are major characters in sponge systematics and taxonomy. Overview Sponges are a species-rich clade of the earliest-diverging (most basal) animals. They are distributed globally, with diverse ecologies and functions, and a record spanning at least the entire Phanerozoic. Most sponges produce skeletons formed by spicules, structural elements that develop in a wide variety of sizes and three dimensional shapes. Among the four sub-clades of Porifera, three (Demospongiae, Hexactinellida, and Homoscleromorpha) produce skeletons of amorphous silica and on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectyonopsis Flabellata
''Ectyonopsis'' is a genus of demosponges in the family Myxillidae. They are mostly known from the waters surrounding Australia and from the Southern Ocean. Description This species was originally created for ''Ectyonopsis ramosa'', an Australian species with acanthostyles (spiny styles (spicules with end pointed and the other rounded)) and acanthostrongyles (spiny strongyles (megascleres with both ends rounded)) that form a choanosomal isotropic structure. The genus ''Ectyonancora'', which contained two South African species with acanthostyles, acanthostrongyles, ectosomal tornotes (spicules with both ends sharply pointed), and isochelae spicules (spicules with both ends alike) with protruding processes, was later synonymised with this genus. All the species in this genus share several features. The tornotes are smooth with triangular/sharply pointed ends. Thick, heavily spined styles are isotopically reticulated and are covered by thick acanthostyles. The microscleres are r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectyonopsis Hartmani
''Ectyonopsis'' is a genus of demosponges in the family Myxillidae. They are mostly known from the waters surrounding Australia and from the Southern Ocean. Description This species was originally created for ''Ectyonopsis ramosa'', an Australian species with acanthostyles (spiny styles (spicules Spicules are any of various small needle-like anatomical structures occurring in organisms Spicule may also refer to: *Spicule (sponge), small skeletal elements of sea sponges *Spicule (nematode), reproductive structures found in male nematodes ( ... with end pointed and the other rounded)) and acanthostrongyles (spiny strongyles (megascleres with both ends rounded)) that form a choanosomal isotropic structure. The genus ''Ectyonancora'', which contained two South African species with acanthostyles, acanthostrongyles, ectosomal tornotes (spicules with both ends sharply pointed), and isochelae spicules (spicules with both ends alike) with protruding processes, was later synonymised ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectyonopsis Panis
''Ectyonopsis'' is a genus of demosponges in the family Myxillidae. They are mostly known from the waters surrounding Australia and from the Southern Ocean. Description This species was originally created for ''Ectyonopsis ramosa'', an Australian species with acanthostyles (spiny styles (spicules with end pointed and the other rounded)) and acanthostrongyles (spiny strongyles (megascleres with both ends rounded)) that form a choanosomal isotropic structure. The genus ''Ectyonancora'', which contained two South African species with acanthostyles, acanthostrongyles, ectosomal tornotes (spicules with both ends sharply pointed), and isochelae spicules (spicules with both ends alike) with protruding processes, was later synonymised with this genus. All the species in this genus share several features. The tornotes are smooth with triangular/sharply pointed ends. Thick, heavily spined styles are isotopically reticulated and are covered by thick acanthostyles. The microscleres are r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectyonopsis Pluridentata
''Ectyonopsis pluridentata'', the fused branch sponge, is a species of demosponge Demosponges (Demospongiae) are the most diverse class in the phylum Porifera. They include 76.2% of all species of sponges with nearly 8,800 species worldwide (World Porifera Database). They are sponges with a soft body that covers a har ... from South Africa. Description The fused branch sponge is made up of a thick cluster of fused branches arising from an indistinct base. It grows up to long and wide. It is beige to rusty brown in colour. The surface is rough and is covered in small (<) circular ostia. While it is firm and compressible, it also breaks easily. Distribution and habitat This species is endemic to South Africa. It is found on the South and West coasts o ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectyonopsis Ruthae
''Ectyonopsis'' is a genus of demosponges in the family Myxillidae. They are mostly known from the waters surrounding Australia and from the Southern Ocean. Description This species was originally created for ''Ectyonopsis ramosa'', an Australian species with acanthostyles (spiny styles (spicules with end pointed and the other rounded)) and acanthostrongyles (spiny strongyles (megascleres with both ends rounded)) that form a choanosomal isotropic structure. The genus ''Ectyonancora'', which contained two South African species with acanthostyles, acanthostrongyles, ectosomal tornotes (spicules with both ends sharply pointed), and isochelae spicules (spicules with both ends alike) with protruding processes, was later synonymised with this genus. All the species in this genus share several features. The tornotes are smooth with triangular/sharply pointed ends. Thick, heavily spined styles are isotopically reticulated and are covered by thick acanthostyles. The microscleres are r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
