93 (92) Chambers are strongly overhanging, not inflated, rimmed by short, sharp, 

 downward-extending spines. Length 0.30-0.45 mm. a. Side view; b, top 

 view Bulimina marginata 



X100 



93 (92) Aperture is terminal 94 



94 (93) Test is roughly triangular in section; wall is ornamented by fine low costae that are 

 not continuous across the sutures. Length 0.35-0.55 mm. a. Side view; b, top 

 view Angulogerina angulosa 



XlOO 



94 (93) Test is roughly circular in section 95 



X50 



95 (94) Terminal aperture contains a large, projecting curved tooth; test is large, elongate, 

 subglobular; wall is glassy, transparent; chambers are inflated, later ones nearly enclos- 

 ing earlier ones. Length 0.75-0.95 mm. a. Side view; b, top view Globobulimina auriculata 



32 



