Figure 6 in Australian species of Psolidium Ludwig (Echinodermata: Holothuroidea: Psolidae)

Figure 6. Photos of ossicles from Australian species of Psolidium Ludwig, 1886 (by Mark O'Loughlin and Chris Rowley): a, P. granuliferum H. L. Clark, 1938, multi-layered ossicles from the sole (SAM K2174); b–c, P. laperousazi sp. nov. (paratype SAM K2179); b, dorsal partly closed cup; c, cup and plate from sole; d–f, P. marshae sp. nov. (paratype WAM Z31165); d, dorsal small cupped crosses and rosettes; e, large cup and knobbed plate from sole; f, dorsal buttons, small endplate, large and small cupped crosses and rosette.