Fig. 7

Pachyzoon grischenkoi sp. nov. Details of zooidal structure and cystid appendages. a, b Broken colonies showing general polygonal zooidal arrangement. Overview in (a), detail in (b). c Basal view of colony showing thin cystid appendages. d Basal view of colony showing thicker and wrinkled cystid appendages. Abbreviations: cy cystid appendage, po polypide