Fig. 4

1–3 Dimorpharaea fungiformis (Milne Edwards & Haime, 1851), FPJ 452. 1 transversal thin section. 2 transversal thin section, detail. 3 longitudinal thin section. 4–6 Dimorpharaea ornata (Koby, 1887), FPJ 375. 4 transversal thin section. 5 transversal thin section, detail. 6 longitudinal thin section. 7–9 Dimorpharaea cf. tosaensis Eguchi, 1951, FPJ 377. 7 transversal thin section 8 transversal thin section, detail. 9 longitudinal thin section. Scale bar 1 mm