英语词汇“index fossil”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	index fossil
释义	index fossil noun : a fossil that is usually of narrow time range and wide spatial distribution and that is used in the identification of related geologic formations (as in locating new petroleum reserves)
随便看	dastard dastardize dastardliness dastardly dastardy dastur dasturi dasy dasy- dasya dasyatidae dasycladaceae dasycladacean dasycladaceous dasylirion dasymeter dasyneura dasypeltidae dasyphyllous dasypodid dasypodidae dasypodoid dasyprocta dasyproctid dasyproctine

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