Ichnotaxon

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What Wikipedia says

An ichnotaxon (plural ichnotaxa) is "a taxon based on the fossilized work of an organism", i.e. the non-human equivalent of an artifact. Ichnotaxon comes from the Ancient Greek ἴχνος (íchnos) meaning "track" and English taxon, itself derived from Ancient Greek τάξις (táxis) meaning "ordering".

Excerpt from the Wikipedia article “Ichnotaxon”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Mark A. Wilson (Department of Geology, The College of Wooster). [1], Public domain, via Wikimedia Commons.