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Index Fossil Short Meaning. A fossil is the remains or trace of an ancient living thing. Chapter 17 the history of life modeling index fossils introduction a fossil is the remains or evidence of an ancient living thing. The coiled shell is generally the only part of the ammonite to be preserved as a fossil. They work on the premise that, although different sediments may look different depending on the conditions under which they were laid down, they may include the remains of the same species of fossil.
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They work on the premise that, although different sediments may look different depending on the conditions under which they were laid down, they may include the remains of the same species of fossil. The fossil record is a huge collection of fossils that document the history of life on earth. Index fossils are used to determine the age of many deposits that cannot be dated radiometrically. A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time. Fossils of organisms that lived on earth for only a short time are called index. In a typical fossil, the body form is retained, but the original molecules that made up the body have been replaced by some inorganic material, such as calcium carbonate (caco 3) or silica (sio 2).the fossil feels like, and is, made of rock.
The complex of data recorded in fossils worldwide—known as the fossil record—is the primary source of information about the history of life on earth.
Freebase (3.20 / 5 votes) rate this definition: Fossils are created when organisms die, are incased in dirt and rock, and are slowly replaced by minerals over time. Index fossils (also called key fossils or type fossils) are those that are used to define periods of geologic time. The coiled shell is generally the only part of the ammonite to be preserved as a fossil. Index fossils are the basis for defining boundaries in the geologic time scale and for the correlation of strata. Another term, zone fossil is used when the fossil have all the characters stated above except wide.
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The coiled shell is generally the only part of the ammonite to be preserved as a fossil. Index fossilsfossils of organisms that lived during a relatively short geologic time span.the three conditionsto be an index fossil, a fossil organism must be found throughout the world. Fossil definition, any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc. A fossil is the remains or trace of an ancient living thing. Another term, zone fossil is used when the fossil have all the characters stated above except wide.
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These are known as heteromorphs, from the greek heteros meaning different and morphe meaning form or shape. Index fossils are the basis for defining boundaries in the geologic time scale and for the correlation of strata. They work on the premise that, although different sediments may look different depending on the conditions under which they were laid down, they may include the remains of the same species of fossil. Molds and casts are other types of body fossils. Fossils of organisms that lived on earth for only a short time are called index.
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A fossil is the remains or trace of an ancient living thing. Index fossils (also known as guide fossils, indicator fossils or zone fossils) are fossils used to define and identify geologic periods (or faunal stages). * index fossils, which are widespread fossils that existed over a short period of time, are used to help correlate rock strata found in different locations. Molds and casts are other types of body fossils. The three most important fossil fuels are coal, petroleum, and natural gas.
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Fossils are created when organisms die, are incased in dirt and rock, and are slowly replaced by minerals over time. * evidence for dinosaur extinction and other extinctions can be found in rock layers throughout the world. The noun index fossil has 1 sense: These are known as heteromorphs, from the greek heteros meaning different and morphe meaning form or shape. Molds and casts are other types of body fossils.
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Definition of index fossil : The coiled shell is generally the only part of the ammonite to be preserved as a fossil. Fossil, remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in earth’s crust. These are known as heteromorphs, from the greek heteros meaning different and morphe meaning form or shape. Fossil definition, any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc.
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- evidence for dinosaur extinction and other extinctions can be found in rock layers throughout the world. * index fossils, which are widespread fossils that existed over a short period of time, are used to help correlate rock strata found in different locations. In determining the age of related formations. [ ĭn ′dĕks′ ] the fossil remains of an organism that lived in a particular geologic age, used to identify or date the rock or rock layer in which it is found. If the species concerned were short.
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Fossil, remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in earth’s crust. A useful index fossil must be distinctive or easily recognizable, abundant, and have a wide geographic distribution and a short range through time. Index fossil in american english. Index the three eras of the precambrian are ______. Index fossil, any animal or plant preserved in the rock record of the earth that is characteristic of a particular span of geologic time or environment.
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Fossils of animals, plants, or protists occur in sedimentary rock. The best type of index fossils are usually those of swimming or floating organisms that evolved quickly (and therefore did not cover a long span of geologic history) and were. Women whose index finger was short compared to their ring finger were more likely to have what was regarded as a traditionally male job, the national research university in russia found. Index fossil in american english. The noun index fossil has 1 sense:
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A mold is an imprint left by the shell of a hard skeleton on surrounding rock, such as dinosaur bones buried beneath many layers of sediment. Fossils of organisms that lived on earth for only a short time are called index. Fossil record examples the fossil record is filled with example organisms from earth�s past. Index fossil in american english any fossil of wide geographical distribution and a short range in time, used to correlate and date rock strata and their associated fossils webster’s new world college dictionary, 4th edition. Index fossils must have a short vertical range, wide geographic distribution and rapid evolutionary trends.
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Index fossil, any animal or plant preserved in the rock record of the earth that is characteristic of a particular span of geologic time or environment. (in geology and paleontology) a widely distributed fossil, of narrow range in time, regarded as characteristic of a given geological formation, used esp. A mold is an imprint left by the shell of a hard skeleton on surrounding rock, such as dinosaur bones buried beneath many layers of sediment. Index fossils (also called key fossils or type fossils) are those that are used to define periods of geologic time. The coiled shell is generally the only part of the ammonite to be preserved as a fossil.
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Index fossils (also called key fossils or type fossils) are those that are used to define periods of geologic time. The three most important fossil fuels are coal, petroleum, and natural gas. Index fossils (also called key fossils or type fossils) are those that are used to define periods of geologic time. A fossil record is a group of fossils which has been analyzed and arranged chronologically and in taxonomic order. Fossil definition, any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc.
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