Figure 8
Schemes of the structure of some Nassellaria, compiled by A. Popofsky. (Popofsky, 1913).
I) Plagoniscus; II) Periplecta; III) Plagiocarpa; IV) Campylacantha (compare figs. 7, III; 14, VII and 15, II and III); V) transitional form between Plagiocarpa and Archicircus; VI) Archicircus (compare with fig. 16, III); VII) Cortiniscus (compare with fig. 6, I); VIII) Semantidium (compare with fig. 6, III); IX) Antarctissa (=Helotholus) (compare fig. 9, III); X) Botryoidea (compare figs. 5, V and 10, VII); XI) Lithomitra arachnea (=vanhoeffeni) (compare fig. 5, III, IV; 9, IV and fig. 10, II, III). A, apical horn; D, dorsal spine; Lr and Ll, right and left lateral spines; lr and ll, right and left secondary lateral spines; V, ventral spine; R, arch of the sagittal ring; Vert, vertical spine; MB, median bar; Ca, cardinal pores; Cerv, cervical pores; J, jugal pores (the designations of pores do not correspond to those of Haeckel, fig. 6). |
