홈 > Term: index fossil
index fossil
A fossil that, because of its wide geographic distribution and restricted time range, can be used to identify and date the strata in which it occurs. Compare: guide fossil.
- 품사: noun
- 분야/도메인: 광업
- 카테고리: 일반 광산; Mineral mining
- Government Agency: USBM
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- ed.young
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(Milwaukee, United States)
