Fig. 3 in First record of chambered hexactinellid sponges from the Palaeozoic

Fig. 3. Stratigraphic section of Valporquero Formation at Colle, showing facies distribution including polymicritic mud mounds and part of section from which chambered hexactinellid sponge Casearia has been collected from mud mound facies. Modified after Fernández et al. (2006).