96 
15 16 
Figs 13-18 Hyporosopora baltovensis sp. nov., Oxfordian, Baltow, Poland. Scanning electron micrographs of uncoated, tubular specimens. 13, MUZ PIG{_ 
1601/11/14, end view showing hollow cavity originally occupied by a cylindrical substrate, x 50. 14-15, MUZ PIG 1601/11/15; 14, wide distal fringe of 
basal lamina, x 38; 15, side view showing suture formed by anastomosis of opposite colony edges, x 23. 16, MUZ PIG 1601/11/16, x 28. 17, MUZ PIG 
1601/11/17, x 20. 18, MUZ PIG 1601/11/18, x 12. 
inflated in height, lacking transverse ridges, indented by marginal 
autozooidal apertures. Floor of gonozooid pustulose, corrugated 
distally by the convexities of the underlying autozooids. Ooeciopore 
(Fig. 12) terminal, situated just beyond the inflated part of the 
gonozooid, small, transversely elongate, averaging 0.06 mm long by 
0.09 mm wide, subcircular when the ooeciostome is preserved. 
U. HARA AND P.D. TAYLOR 
WZ. 
REMARKS. The main distinguishing feature of this new species ii) | 
the presence of transverse ridges crossing the colony surface. Trans 
