Fig. 9
Pachyzoon grischenkoi sp. nov. Histological details. a Overview of basal area showing cystid appendages with thick cuticle. b Detail of single cystid appendage. c Detail of thick, wrinkled appendage with musculature. d Interzooidal pore-plate. e Orifice with fringed cuticle. f Collar within vestibulum. Abbreviations: bbw basal body wall, c collar, ca cardia, cy cystid appendage, es esophagus, fbw frontal body wall, l lophophore, o orifice, ph pharynx, pop pore-plate, rm retractor muscle, v vestibulum, vw vestibular wall