FIGURE 5 in A morphological re-study of three spinicaudatan species from the Middle-Upper Jurassic of Gansu Province, northwestern China

FIGURE 5. Euestheria jingyuanensis Chen in Zhang et al., 1976 emend. A–C, Focus-stacked images. D, E, SEM images. A, The holotype (NIGP 29784), left valve. B, The paratype (NIGP 29783), external mould of holotype. C, The paratype (NIGP 29785), left valve. D, SEM images of the same individual in Fig. 5C (NIGP 29785). E, Growth bands on the antero-ventral part of the carapace, ornamented by irregular tubercles, tubercle stretched irregularly to form reticulation, mesh is 11–18 μm in diameter; and tubercles on the marginal region of the carapace stretched vertically to form radial lirae. Scale bars = 1 mm in A–D, 100 μm in E.