Single-cell animal. A calcareous shell, shell and more holes, resulting in many filamentous pseudopods overflow. Life in the ocean, leaving shells piled seabed to form a rock. Foraminifera can be used to determine the geological age of rocks.
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No. 2
有孔虫
Foraminifer foraminifer Foraminifera are single-celled animals. A calcareous shell, shell and more holes, which overflows many filamentous false foot. Life in the ocean, leaving sea shells stacked to form a rock. Foraminifera can be used to determine the geological age of rocks. The door is a protozoan foraminifera foraminifera subclass, from the Cambrian to the present have been there. Worms hidden in the small shell, the shell is divided into many small cells within a small, shaped by a number of micro-joints or holes worn through. Shell is usually calcium carbonate, but also silica and chitin. Some foraminifera is through the fine-grained minerals or other foreign particles cemented together, to build their own shell, this shell is cemented or with sandy. Because foraminifera are very small, in the drilling process will not be destroyed, so the search for oil is particularly valuable. Some foraminifera can be easily seen with the naked eye, a few species of foraminifera shells, diameter 5 cm. Some foraminifera shell (for example, hold coccidia are) a lot of accumulation in many parts of the modern ocean floor to form a thick layer of sediment. This soft, fine-grained and hold coccidia ooze called calcium material, now covered with about 1.3 million square kilometers of seabed. In the past geological age has deposited with the similar, but has become a thick layer of chalk and limestone.
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No. 3
Foraminifera Foraminifer Foraminifera are a class of ancient protozoa, 500 million years ago produced in the ocean, has a wide range. Because foraminifera secrete calcium or silica, the formation of shell and the shell has a large pore or hole, in order to extend pseudopodia, hence the name foraminifera. Foraminifera, a part of the marine food chain, its main food for the diatoms, and fungi, crustaceans, larvae, etc., individual types of food is sand. Planktonic foraminifera is an important component of most marine organisms important source of food. Foraminifera mode of reproduction and sexual reproduction asexual reproduction sub-two. Their living space with very wide, like other protozoa, zooplankton and benthic two sub-groups. Foraminiferal response to the environment particularly sensitive, with a clear depth distribution, and therefore they are the best indication of the deep sea creatures. Because different periods have different foraminifera, therefore, not only based on foraminifera of sediment to determine the geological formation, but also prompted ground conditions, so as to search for minerals, especially oil, to provide an important basis. Foraminifera individual is extremely small, only 0.15 mm in size, it needs a magnifying glass to tell the difference. They appeared on the earth than the coral time still early, and has been breeding ever since. They are many kinds of multiply rapidly, with the asexual mode of reproduction, while the large population, while death, left behind after the death of chitin, siliceous and calcareous rocks and shell deposition in the reef coral skeletons cemented together . Some reef is the remains of foraminifera dominated. Fiji Islands, the Ellice Islands in the Funafuti atoll, are the remains of foraminifera as the main composition. Class Rhizopoda foraminifera head (Foraminiferida) of protozoa, characterized ︰ hidden in the shell from the single-core or multi-core within the cytoplasm of the body out of slender pseudopodia. Due to different types of shell size from very small to the largest diameter of more than 5 cm (2 inches). And the shape and number of rooms, chemical composition and surface orientation varies owing species. Large variety of shell South Pacific, Oceania, island residents take for jewelry use. Eocene limestone pyramids of Egypt to find the money Genus (Nummulite) shell diameter greater than 5 cm. Foraminifera inhabit nearly all protected material and appropriate food (tiny organisms) of the sea, almost all are found at the depth. The existing small planktonic and benthic fauna of the important part. Fossils everywhere, so as to determine the geological exploration of oil and fossil standards. Foraminifera death, sinking its calcareous shell to form a foraminiferal ooze, covered with about 30% of the ocean floor surface. Foraminiferal limestone and chalk are the product of the bottom sediment. Affect foraminiferal growth, reproduction and distribution of the main factors is the water temperature, depth and salinity; appropriate food is easy to get; the nature of the substrate and oxygen supply and so on. Existing populations of marine foraminifera recognized by the six different fauna composition; four of them appear in the warmer waters; two in colder waters. Although some species only line of asexual reproduction, and most species have a regular or occasional sexual generation. Reproductive process normally takes 1-3 days. Smaller species can be completed in a month sexual and asexual generations. But larger species, usually 1 to 2 years. Because all of the cytoplasm are usually assigned to a new form of larvae, so often the mother's reproductive life terminated. Foraminifera are single-celled animals. A calcareous shell, shell and more holes, which overflows many filamentous false foot. Life in the ocean, leaving sea shells stacked to form a rock. Foraminifera can be used to determine the geological age of rocks. The door is a protozoan foraminifera foraminifera subclass, from the Cambrian to the present have been there. Worms hidden in the small shell, the shell is divided into many small cells within a small, shaped by a number of micro-joints or holes worn through. Shell is usually calcium carbonate, but also silica and chitin. Some foraminifera is through the fine-grained minerals or other foreign particles cemented together, to build their own shell, this shell is cemented or with sandy. Because foraminifera are very small, in the drilling process will not be destroyed, so the search for oil is particularly valuable. Some foraminifera can be easily seen with the naked eye, a few species of foraminifera shells, diameter 5 cm. Some foraminifera shell (for example, hold coccidia are) a lot of accumulation in many parts of the modern ocean floor to form a thick layer of sediment. This soft, fine-grained and hold coccidia ooze called calcium material, now covered with about 1.3 million square kilometers of seabed. In the past geological age has deposited with the similar, but has become a thick layer of chalk and limestone. Their homes far below sea level, and deeper than the height of Mount Everest. The deepest trench in the Pacific - the most remote corners of the earth find tiny creatures. These creatures can be seen with a microscope, called foraminifera. They live in the Mariana Trench Challenger Deep at the bottom of the mud. The bottom of Challenger Deep in the Western Pacific sea 11 km under the pressure of that depth is 1090 times the sea. Yokosuka, Japan in marine science and technology institutions in the North Pacific (Hiroshi Kitazato) led the study, they use a number called the Trench (Kaiko) submarine sediments collected in this trench. The remote control submarine for the first time deep-sea submersible 入玛里亚纳 trench in 1995. A mission in 2003, it disappeared in the sea. From these samples, the North Western's team found that many bacteria and 432 kinds of live foraminifera. The latter is about the size of tens of microns. Hundreds of foraminifera in the tip size of the place crowded. Most are soft-shelled foraminifera, they are either round or needle-shaped, brown color is gorgeous. Their "Science" magazine reported this finding. Lack of housing Southampton Oceanography Centre in the UK study of marine organisms Alan Hughes said, in addition to foraminifera, marine bacteria may be outside of the most abundant marine life. Most foraminifera have complex shells made of calcium carbonate. But in the Challenger Deep foraminifera found in the lack of housing. In fact, 85 percent of scientists groan are soft-shelled foraminifera allogromiids - they are only the ocean surface foraminiferal group of 5% to 20%. This may be because the deepest ocean only a few calcium carbonate, which means that these organisms may be unable to create shell. "When you further and further deep, you'll reach a point called the calcium compensation depth," Hughes explained. "In that deep below, you begin to find soft-shelled foraminifera." North Ocean Study Group suggested that soft foraminifera thrive in the Mariana Trench, is because they are one of the few creatures able to withstand tremendous pressure. Geologists think that this trench formed in the 6 1000000-9 million years ago. At that time, the ecosystem was less pressure species were actually crushed to death. Sea surface is saturated calcium carbonate. As the depth increases, as temperature decreases, CO2 levels increase, calcium carbonate solubility increases to a critical depth, dissolved the amount of off_set_ and supply balance, the critical depth is the calcium carbonate compensation depth Subhead foraminifera suborder and superfamily and the main features of Protozoa door (Protozoa) Meat enough insects Gang (Sarcodina) Foraminifera head (Foraminiferida) Foraminifera present classification based on the most recent program, the next points and six sub-orders, 19 superfamilies First, the net enough insects suborder (Allogromiina) Single atrioventricular false chitin shell. Sections were film-like, non-hierarchical, with little formation of fossils, common in modern freshwater and brackish sediments. Only a superfamily - bottle-shaped insect superfamily (Lagynacea), Late Cambrian to the present. Second, beaded insect suborder (Textulariina) Cement shell, non-hierarchical, granular or fibrous, some with maze-like structure, according to the number two super-AV Division: (1) sand disc insect superfamily (Ammodiscacea) single compartment or double compartment, often spherical, tubular, branched or flat spin, rotating around the shell. Mouth hole is simple, free next door or taking shape next door. Cambrian to the modern. (2) song stick insect superfamily (Lituolacea) multi-compartment, often single row, double row, three or spiral shell. Complete development next door. Mouth hole single or complex. Carboniferous to the modern. Third, the volume inside the insect suborder (Endothyrina) Particulate calcium shell, the shell wall or floor is not hierarchical. Spin-off of certain categories with a small ridge and next door, the shell wall and sometimes a small amount of foreign substances in the folder, divided into two superfamilies: (1) household insect superfamily to be sand (Parathuramminacea) single-compartment, shell spherical, tubular or beaded, shell wall often contains foreign material, non-hierarchical, the mouth hole is simple, and sometimes can be seen taking shape next door, Ordovician to Carboniferous Ji; (2) involution insect superfamily (Endothyracea) multi-compartment, often single row, double row, flat rotating shell, the shell wall are mostly divided into two layers, often with the end or base of the mouth hole. Silurian to the Triassic. Fourth, the dragonfly suborder (Fusulinina) Particulate calcium shell, the shell wall of layered clear, up to four, spin-ridge, the proposed spin-ridge development, often next to fold. Carboniferous to Permian. Only a superfamily - dragonfly superfamily (Fusulinacea). Fifth, the small grain insect suborder (Miliolina) Non-porous ceramic shell like calcium, often with false chitin lining, sometimes with foreign substances, in order to level rotating around the rotating shell is most common, mouth-hole at the end of the final room, decorated with change often develop mouth hole . Carboniferous to the modern. Only a super-section - a small grain insect superfamily (Miliolacea). Sixth, rotifers suborder (Rotaliina) Calcium transparent shell, the shell walls are porous, AV arrangement diverse, mouth-hole type complex. In the Carboniferous to the modern. There are 12 superfamily. Which hold coccidia superfamily (Globigerinacea) planktonic foraminifera, other foraminifera are doing different forms of benthic life, known as the benthic foraminifera
