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-现代词典

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	bicipital fascia bicipital groove bicipital tuberosity bicircular bick bicker bickering bickerment bickertonite bickford bickford fuse bickiron bicknell bicknell's bicknell's thrush bicknell thrush biclinium bicoastal bicol bicollateral bicollaterality bicolligate bicolor bicolor bicolored

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