Interdissepimental

The studied species either represent unusual forms that secreted very dense, compact skeletons entirely devoid of large intraskeletal pores (i.e., intertabular and interdissepimental spaces; Microcyclus, Palaeocyclus), or formed particularly thick corallite walls (Calceola), thus minimizing the contribution of intraskeletal cements to the measured isotope ratios.