Activity 12: Evidence from the Fossil Record

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Last updated 9:07 AM on 6/15/26
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8 Terms

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Stratigraphy

the study of rock layers and the sequence of events they reflect

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transitional fossils

fossils that show links in traits between groups of organisms used to document intermediate stages in the evolution of a species.

<p>fossils that show links in traits between groups of organisms used to document intermediate stages in the evolution of a species.</p>
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tetrapods

animals with four limbs

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Strata

layers of rock

<p>layers of rock</p>
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radiometric dating

method used to determine the age of rocks using the rate of decay of radioactive isotopes

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absolute dating

A technique used to determine the actual age of a fossil

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Co-opted features

A feature that evolved to serve a certain function that was then modified through natural selection to serve another function.

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Tiktaalik

transitional fossil between fish and tetrapods

<p>transitional fossil between fish and tetrapods</p>