Fig. 13 in In vivo and post-mortem bioerosion traces in solitary corals from the upper Pliocene deposits of Tunisia

Fig. 13. Sulcichnus sigillum Martinell and Domènech, 2009, a fixichnion produced by commensal polychaetes in the skeleton of caryophylliid coral Ceratotrochus (Edwardsotrochus) duodecimcostatus (Goldfuss, 1826), from the El Melah stream section, the upper part of the Argiles de Sidi Barka Formation (upper Pliocene) of Tunisia. A. INGUJ265P173. B. INGUJ265P170 in different side views (B1, B2). C. INGUJ265P175 in different side views (C1, C2). Abbreviation: Me, Maeandropolydora elegans.