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Index fossil
01
fósil guía, fósil indicativo
a fossilized organism that is useful for dating and correlating the strata in which it is found, typically indicative of a particular time period in Earth's geological history
Example
The trilobite is an index fossil commonly used to date Paleozoic rock layers.
El trilobito es un fósil guía comúnmente utilizado para datar las capas de roca del Paleozoico.
Geologists rely on index fossils to determine the relative age of sedimentary rock formations.
Los geólogos se apoyan en los fósiles guía para determinar la edad relativa de las formaciones de roca sedimentaria.
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