noun
derived fossil
Technical term in paleontology for a fossil that has been transported from its original location and redeposited in younger strata.
誘導化石は、本来の地層とは異なる場所で発見されることがある。
Derived fossils are sometimes found in strata different from their original formation.
示準化石 (index fossil) is used to date the strata in which it is found, while 誘導化石 is a fossil that has been moved from its original layer.
Compound of 誘導 (yūdō, 'guidance; derivation') and 化石 (kaseki, 'fossil'). The term likely calques English 'derived fossil'.