Kowalewski, Michal Department of Geological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia.
Last reviewed:January 2021
- Shell drilling
- Paleoecology of drilling predation
- Related Primary Literature
- Additional Reading
A morphologically distinct type of trace fossil left by boring organisms in hard biogenic substrates. Oichnus Bromley 1981 is a formal taxonomic name with the rank of ichnogenus (a trace fossil genus). Oichnus is a Latin-derived term that literally means a trace (ichnus) shaped like the letter “O”; it denotes the small circular to subcircular holes (borings) found primarily in fossilized skeletal remains of invertebrate animals, such as mollusk shells, ostracode valves, or echinoid tests.
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