Meaning of the word "index fossil" in English
What does "index fossil" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.
index fossil
US /ˈɪn.deks ˈfɑː.səl/
UK /ˈɪn.deks ˈfɒs.əl/
Noun
a fossil that is useful for dating and correlating the strata in which it is found
Example:
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Ammonites are often used as an index fossil to determine the age of rock layers.
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To be a good index fossil, a species must have been widespread and existed for a short period of time.
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