Index Fossil Definition Archaeology

Index fossil definition a widely distributed fossil of narrow range in time regarded as characteristic of a given geological formation used especially in determining the age of related formations. Index fossils are the basis for defining boundaries in the geologic time scale and for the correlation of strata.

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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.

Index fossil definition archaeology. A fossil that is found in many places and comes from the same time in history so that. A useful index fossil must be distinctive or easily recognizable abundant and have a wide geographic distribution and a short range through time. Another term zone fossil is used when the fossil have all the characters stated above except wide.

Index fossil definition is a fossil usually with a narrow time range and wide spatial distribution that is used in the identification of related geologic formations. Index fossils also known as guide fossils or indicator fossils are fossils used to define and identify geologic periods or faunal stages. Index fossils must have a short vertical range wide geographic distribution and rapid evolutionary trends.

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