Wilson, Mark A. Department of Geology, College of Wooster, Wooster, Ohio.
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A simple cylindrical boring common in the fossil record for the past 540 million years. Trypanites is an ichnogenus, which is a formal name given to a distinct trace fossil (evidence of organism behavior in the fossil record as distinct from the remains or other representations of the organism's body). Trypanites is thus not a type of life but a structure built by a variety of wormlike animals over time. See also: Trace fossils
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