Fig. 4 in A new coral with simplified morphology from the oldest known Hettangian (Early Jurassic) reef in southern France

Fig. 4. Hettangian (Early Jurassic) zardinophyllid coral Cryptosepta gen. nov. from Ucel, Ardèche, France. A. Corallite (sample MG156b; MHNG 2013- 39), longitudinal section showing the septa deeply hidden in the corallite. B. Holotype (sample S6b; MHNG 2013-36), longitudinal section (B 1), showing lateral budding with the parental (p) and daughter corallite (d), tabula (arrow) with septa developed on its upper surface; transverse section (B 2), young stage of lateral budding with the parental (p) and daughter corallite (d). C. Corallite (sample MG156d; MHNG 2013-41), transverse section, advanced lateral budding stage with the parental (p) and daughter corallite (d). D. Holotype (sample S6a; MHNG 2013-35), longitudinal section (D 1), rejuvenescence indicated through calicinal aperture retraction (white arrow), which facilitated new septa (grey arrows); transverse section in detail (D 2), septa morphologies: short and thick, which form a "tooth" shape (a) or thinner and curved (b), fine layer (fi) covering the internal part of the theca (ip). E. Holotype sample S6c; MHNG 2013-37), transverse section in detail, fine external epithecal layer (arrow) separated from the massive thecal structure.