Fig. 1 in Bumps on the back: An unusual morphology in phylogenetically distinct Peridinium aff. cinctum (= Peridinium tuberosum; Peridiniales, Dinophyceae)

Fig. 1 The original material of Peridinium tuberosum. Numbers indicated by Meunier (1919) follow: (23) Ventral view with sulcus extending onto the epitheca (similar to Peridinium cinctum but different from Peridinium gatunense). (24) Dorsal view. (25) Apical view with asymmetrical epithecal plate pattern (similar to P. cinctum). (26) Antapical view. (27) Right lateral view with a slight tilt towards the front. Note the bulges on the posterior end of the cell in 23‒24, 26‒27, which are distinctive traits of P. tuberosum