FIGURE 4. Sinokontikia lianmuqinensis Wang, 1985 in A morphological re-study of three spinicaudatan species from the Middle-Upper Jurassic of Gansu Province, northwestern China

FIGURE 4. Sinokontikia lianmuqinensis Wang, 1985. Type specimens (NIGP 130637) in Shen et al., 2002. A, Focus-stacked images. B–G, SEM images. A, External mould of a right valve. B, Growth bands in the anterior part of the carapace, ornamented by irregularly stretched tubercles, appearing as irregular reticulation on external mould. C and D, Growth bands in the antero-ventral part of the carapace, ornamented by irregularly stretched tubercles, tubercles stretched vertically on the lower part of each growth band, appearing as irregular reticulation with radial lirae on the lower part of each growth band in the external mould. E–G, Growth bands in the postero-ventral part of the carapace, ornamented by irregular tubercles, tubercles stretched transversely, appearing as irregular reticulation, some growth bands with transversely reticulation on external mould. Scale bars = 1 mm in A, 100 μm in B and D–G, 200 μm in C.