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Now that you have established the bioerosional nature of your trace fossil, most authors agree on the following hierarchy of importance when it comes to ichnotaxobases (Bertling 2007, Knaust 2012): 1. Branching, 2. shape, 3. size (micro- or macrobioerosional); 4. substrate (bioeroding in limestone require different adaptations of the tracemakers than bioerosion in wood or basalt), 5. orientation (which is regarded as an accessory ichnotaxobase having minor importance at the ichnogenus level). Please, go through the list below and click the appropriate feature of your bioerosion trace to bring you one step further:
Branching
Is your bioerosional structurebranched or unbranched?
It is important to note that a determination of bioerosional structures has the best results when looking at casts rather than the traces themselves!
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