Fig 14. Micro-computed tomography of Marginopora orpheusensis nov. spec with the shell removed, showing the interseptal space.

A) the 40^th chamber of specimen RGM.1352060 showing that a single stack of chamberlets (s) splits into two stacks of chamberlets at least for part of the chamber length, chamberlet height is 0.6 mm) and B) the 37^th (green), 38^th (red), 39^th (yellow) and 40^th (blue) chamber of specimen G466208 showing the horizontal doubling of the interseptal space of chamber 39. Note the single double length marginal chamber in the 38^th chamber, accompanied by a partial fusion of the annular passages in chamber 37 and 38, suggesting that these chambers combined might be a single growth increment. Chamberlet height is 0.6 mm.