Photographs: Holotype of Placocyathus maoensis (Vaughan in Vaughan & Hoffmeister, 1925); specimen USNM 353644, locality USGS 7785 (?Cercado Formation, Dominican Republic).
Photos in Cairns and Wells, 1987, Plate 8, Figs. 1, 2.
Scale bar = 1.0 cm.
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