FIGURE 6. Pirabasoporella chipolae n in A new genus of the family Jaculinidae (Cheilostomata, Bryozoa) from the Miocene of the tropical western Atlantic

FIGURE 6. Pirabasoporella chipolae n. sp. A, holotype (collection number USNM 595126) showing a triangular fenestrule above a branch bifurcation. B, detail of aperture of paratype (collection number USNM 595127) showing oral spines and the characteristic pseudosinus formed by two centrally directing lateral denticles. C, paratype (collection number USNM 595127) showing irregular growth with small fenestrules. D, paratype (collection number USNM 595128) showing well-calcified frontal shield with suboral avicularia. E, lateral view of paratype (collection number USNM 595129) showing strut-producing pore plates with a large spatulate avicularium (arrow). F, Abfrontal side of paratype (collection number USNM 595130) with large, deep, round to oval rhizoid-producing pores of variable size. G, abfrontal view of paratype (collection number USNM 595131) showing rhizoid-producing pores and two struts initiated from two different pore plates fusing with each other. Scale bars all 100 µm.