Figure 4. Cyclostome protoecia showing Pattern 6 in Ancestrular morphology in cyclostome bryozoans and the quest for phylogenetically informative skeletal characters

Figure 4. Cyclostome protoecia showing Pattern 6 (a, b), Pattern 7 (c, d) and Pattern 8 (e, f). (a) Diaperoecia purpurascens, Whangaroa Harbour, New Zealand. (b) 'Heteropora' neozelanica, Spirits Bay, New Zealand. (c) Annectocyma major, English Channel, UK; central part of protoecium is damaged. (d) Stomatopora cf. dichotomoides, Jurassic, Bathonian, Somerset, UK. (e) Crisulipora occidentalis, Long Beach, California, USA; the pseudopores in this species are occluded by perforated plates, making them less clearly visible. (f) Cinctipora elegans, Otago Shelf, New Zealand.