FIGURE 1. Hincksina flustroides (Hincks, 1877). A. overview of lectotype (NHMUK 2016.6.9.2). B. Oblique view on autozooids (NHMUK 1963.3.24.2), note the presence of bifid as well as broad and slender mural spines, and the jointed spines bases (dark areas between mural rim and calcified spines). C. Close-up of avicularium (lectotype, NHMUK 2016.6.9.2). D. Ovicellate zooids (NHMUK 1963.3.24.2). Scale bars: A, 500 µm; B, 100 µm; C, 50 µm; D, 200 µm.