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me
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Imagine that you have a shoebox full of family photos that you're trying to put in order. If your Uncle Al had Elvis sideburns before he went into the army, or Aunt Cassie had an Afro when she was in high school, that would help. Seeing how many of Danny and Raquel's kids were in the picture would help, too. These are clues to which pictures came earlier and which later. Since the early nineteenth century, clues called index fossils have been important in figuring out the order of events in geological history. A kind of fossil is useful as an index fossil if it is seen commonly, all over the world and is in a certain time range, like those pictures of you when you had a cast on your arm.
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Paper Information
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Title: me
Words: 525
Rating: None
Pages: 2.1
submitted by: john417
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