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Pentechinus mirabilis Philip & Foster, 1971 NMV P27942 (holotype). Port Addis Limestone, late Oligocene, Airey's Inlet, Anglesea district, Victoria, Australia.  Adapical view and interior of oral surface showing perignathic girdle (From Philip & Foster, 1971, pl. 129, figs 11, 15).

Test diameter 10 mm.