FIGURE 6 in A morphological re-study of three spinicaudatan species from the Middle-Upper Jurassic of Gansu Province, northwestern China

FIGURE 6. Euestheria jingyuanensis Chen in Zhang et al., 1976 emend. SEM Images of the holotype specimens in Fig. 5A (NIGP 29784). A, Left valve. B–E, growth bands in the upper and middle part of the carapace, ornamented with very fine reticulation, mesh is 2–4 μm in diameter, mesh wall very thick and bulge, makes reticulation seems very sparse. F, growth bands near the anterior, antero-ventral, and postero-ventral margin of the carapace, ornamented with irregular tubercles, tubercles stretched vertically and with linear arrangements to form radial lirae. Scale bars = 1 mm in A, 10 μm in B and C, 50 μm in D–G, 100 μm in H.