Fig. 4. Diacrodian acritarch Lusatia dendroidea Burmann, 1970 in Late Cambrian acritarch Lusatia: Taxonomy, palaeogeography, and biostratigraphic implications

Fig. 4. Diacrodian acritarch Lusatia dendroidea Burmann, 1970 emended + herein. Upper Cambrian, El Fabar tunnel, Cantabrian Zone, Spain. All specimens from sample Tun−Filocar. For each illustrated specimen slide number, repository number, and England Finder Graticule are given. All specimens with three processes. A. Stub LU2, MGM−1080K, R42; specimen with subtriangular vesicle (A1), detail of branching of antapical process, with curly terminations (A2). B. Slide ›10/1, MGM−1081K, N36/3, specimen with thick−walled vesicle and excystement by median split. C. Slide II/1, MGM−1082K, P29, specimen showing base of processes slightly constricted simulating a sort of plug. D. Slide ›10/1, MGM−1083K, U44/4, specimen with darker central area extending as a spine into the base of the processes. E. Stub 6, MGM−1084K, O45, specimen with an auxiliary filament. F. Slide ›10/1, MGM−1085K, M28, specimen with a thick−walled vesicle and distal loop of apical process. G. Slide ›10/1, MGM−1086K, E44. H. Slide ›10/3, MGM−1087K, P30/4, specimen with a thick−walled vesicle and excystement by median split.