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Provanna Beebei
''Provanna'' is a genus of sea snails, marine (ocean), marine gastropod mollusks in the family (biology), family Provannidae. The species was named after Dall's first wife. This is a very old genus with species already existing in Cretaceous seep deposits off Japan (93 - 100 million years ago). The Caribbean and the Pacific fauna were isolated about 3 million years ago by the closure of the Central American Isthmus. Description The apical whorls of the protoconch are lacking through decollation. The opening is then sealed with a calcareous plug. The sculpture of the ovate fusiform shell shows scattered sigmoidal axial ribs that are crossed by spiral cords. The whorls are broad. Habitat They are common in hydrothermal vents, hydrocarbon cold seeps and (more rarely) on deep-water food-falls, depending on the species. Most species feed on filamentous bacteria, while others feed on detritus. Species Species within the genus ''Provanna'' include: * ''Provanna abyssalis'' Okutani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ninth and longest geological period of the entire Phanerozoic. The name is derived from the Latin , 'chalk', which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation . The Cretaceous was a period with a relatively warm climate, resulting in high Sea level#Local and eustatic, eustatic sea levels that created numerous shallow Inland sea (geology), inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was largely ice-free, although there is some evidence of brief periods of glaciation during the cooler first half, and forests extended to the poles. Many of the dominant taxonomic gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provanna Antiqua
''Provanna'' is a genus of sea snails, marine gastropod mollusks in the family Provannidae. The species was named after Dall's first wife. This is a very old genus with species already existing in Cretaceous seep deposits off Japan (93 - 100 million years ago). The Caribbean and the Pacific fauna were isolated about 3 million years ago by the closure of the Central American Isthmus. Description The apical whorls of the protoconch are lacking through decollation. The opening is then sealed with a calcareous plug. The sculpture of the ovate fusiform shell shows scattered sigmoidal axial ribs that are crossed by spiral cords. The whorls are broad. Habitat They are common in hydrothermal vents, hydrocarbon cold seeps and (more rarely) on deep-water food-falls, depending on the species. Most species feed on filamentous bacteria, while others feed on detritus. Species Species within the genus ''Provanna'' include: * '' Provanna abyssalis'' Okutani & Fujikura, 2002 * '' Provanna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provanna Ios
''Provanna ios'' is a species of deep-sea sea snail, a marine gastropod mollusk in the family Provannidae. Description Distribution This species occurs in East Pacific hydrothermal vents at the Galapagos Rift. References * Warén A. & Bouchet P. (2001). ''Gastropoda and Monoplacophora from hydrothermal vents and seeps new taxa and records''. The Veliger 44(2): 116–231 ios Ios, Io or Nio (, ; ; locally Nios, Νιός) is a Greek island in the Cyclades group in the Aegean Sea. Ios is a hilly island with cliffs down to the sea on most sides. It is situated halfway between Naxos and Santorini. It is about long an ... Gastropods described in 1986 {{Provannidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provanna Goniata
''Provanna goniata'' is a species of deep-sea sea snail, a marine gastropod mollusk in the family Provannidae. Description Distribution This marine species occurs in East Pacific hydrothermal vent Hydrothermal vents are fissures on the seabed from which geothermally heated water discharges. They are commonly found near volcanically active places, areas where tectonic plates are moving apart at mid-ocean ridges, ocean basins, and hot ...s in the Guyamas Transform Ridge References External links Warén A. & Bouchet P. (2001). ''Gastropoda and Monoplacophora from hydrothermal vents and seeps new taxa and records''. The Veliger 44(2): 116–231 goniata Gastropods described in 1986 {{Provannidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provanna Glabra
''Provanna glabra'' is a species of sea snail, a marine gastropod mollusk in the family Provannidae. Description Distribution ''Provanna glabra'' lives in the Northwest Pacific. The most sightings have been reported in Japan, but it has also been found in Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea .... References glabra Gastropods described in 1992 {{Provannidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provanna Fortis
''Provanna'' is a genus of sea snails, marine gastropod mollusks in the family Provannidae. The species was named after Dall's first wife. This is a very old genus with species already existing in Cretaceous seep deposits off Japan (93 - 100 million years ago). The Caribbean and the Pacific fauna were isolated about 3 million years ago by the closure of the Central American Isthmus. Description The apical whorls of the protoconch are lacking through decollation. The opening is then sealed with a calcareous plug. The sculpture of the ovate fusiform shell shows scattered sigmoidal axial ribs that are crossed by spiral cords. The whorls are broad. Habitat They are common in hydrothermal vents, hydrocarbon cold seeps and (more rarely) on deep-water food-falls, depending on the species. Most species feed on filamentous bacteria, while others feed on detritus. Species Species within the genus ''Provanna'' include: * '' Provanna abyssalis'' Okutani & Fujikura, 2002 * '' Provanna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provanna Chevalieri
''Provanna chevalieri'' is a species of sea snail, a marine gastropod mollusk in the family Provannidae. Description & Characteristics Provanna chevalieri is a species of gastropod in the family Provannidae. It is known for its unique shell morphology which includes a slender, elongated shape and distinct patterns. Habitat & Distribution Provanna chevalieri is typically found in hydrothermal vent ecosystems in the deep sea. These environments are characterized by extreme conditions, including high pressure, high temperature, and the presence of toxic chemicals. This species commonly occurs at methane seeps in deep water off the Congo River The Congo River, formerly also known as the Zaire River, is the second-longest river in Africa, shorter only than the Nile, as well as the third-largest river in the world list of rivers by discharge, by discharge volume, following the Amazon Ri .... Ecology & Behaviour This species is adapted to survive in harsh deep-sea conditions. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
