index fossil
(television) Initialism of Children's BBC.
Any ancient remains of a plant or animal that lived during a specific geological period and that can be used to date the containing rocks.
(transitive, baseball) To score more runs than. / (transitive) To defeat or surpass in a fistfight.
The quality of being coethnic.
古生物学者たちは石灰岩層で示準化石を確認し、それによって岩石の年代を特定することができた。
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