75 (74) Ornamentation consists of a reticulated pattern, in which the cells are in vertical 



rows. Length about 0.40 mm; diameter about 0.40 mm Oolina melo 



X50 



75 (74) Sac is globular or elongate; ornamentation consists of blunt ribs 

 that end at the base of a thick collar around the apertural end. 

 Length 0.30-0.42 mm; diameter 0.20-0.30 mm. a. Side view; b, 

 oblique upward view of interior of broken specimen; c, side 

 view of a more elongate specimen Oolina borealis 



76 (73) Periphery is angled but not keeled; apertural end is protruding. Length 



0.25-0.30 mm. a, Front view; b, side view Fissurina laevigata 



76 (73) Periphery has a double keel; test outline is neariy circular. Length 0.1 2-0. 1 8 



mm. a, Front view; b, edge view; c, top view Fissurina marginala 



77 (68) Chambers are in multiple rows 78 



77 (68) Chambers are in a single row 96 



26 



