FIG. 18. — A-D, I, Pseudopoulpus crassispinosus n in Lower Tithonian mono- and dicyrtid Nassellaria (Radiolaria) from the Solnhofen area (southern Germany)

FIG. 18. — A-D, I, Pseudopoulpus crassispinosus n. sp.; A, B, holotype, left lateral and basal views showing a thick spongy tissue around median bar, ventral spine, and primary lateral spines; C, D, I, paratypes; C, right lateral view; I, same, basal view showing details of initial spicule and arches; D, basal view showing an exagerate overgrowth of spongy tissue covering completely the colar aperture; E, G, H, J, Pseudopoulpus tenuihirsutus n. sp.; E, J, paratype, partly broken specimen, ventro-apical view, and detail of the dorsal lobe with arches Al; G, holotype, dorsal view showing the slightly pronounced dorsal lobe; H, paratype with a large number of additional horns, left lateral view; F, Pseudopoulpus spinosus Kiessling, 1999, right lateral view showing a pronounced dorsal lobe. Abbreviations: A, apical spine; l, secondary lateral spine. Scale bars: 30 µm.