FIGURE 6 in Bryozoan framework composition in the oddly shaped reefs from Abrolhos Bank, Brazil, southwestern Atlantic: taxonomy and ecology

FIGURE 6. Scanning electron micrographs of three bryozoan species. A. Gemelliporina glabra, fragment showing orifices and a small avicularium. B, C. Plesiocleidochasma acuminata n. sp. B. General view of a fragment showing infertile zooids. C. Detail of some zooids showing cleithridiate orifices, a few scattered areolar pores and acuminate avicularia with rostra ending in a sharp and elongate tip. D–F. Rhynchozoon aff. rostratum. D. General view of a colony part showing some zooids with peristomial tubercles and frontal avicularia. E. Detail of some autozooids showing peristomial tubercles and frontal, triangular avicularia. F. Detail of one zooid showing distally beaded orifice and a suboral lateral avicularium with a triangular rostrum, and a suboral umbo.