Plate 9. GLOBOROTALIIDAE 



Page 

 Figures la-c. Praeglobotruncana delrioensis (Plum- 39 

 mer) 



la, Spiral side of topotype (USNM P4481), 

 showing moderately developed early keel, lb, 

 Umbilical side, showing extraumbilical-umbilical 

 aperture. Ic, Edge view. From the Cenomanian 

 Del Rio clay of Texas. X 145. 

 Figures 2a-c. Praeglobotruncana stephani (Gan- 39 

 dolfi) 



2a, Spiral side of topotype (USNM P4848) of 

 the type species of Rotundina Subbotina. 2b, 

 Umbilical side, showing extraumbilical-umbilical 

 aperture. 2c, Edge view. From the Cenomanian 

 of Switzerland. X 95. 

 Figures 3a-d. Praeglobotruncana planispira (Tap- 39 

 pan) 



3a, Spiral side of hypotype (USNM P4875). 

 3b, Umbilical side, showing extraumbilical- 

 umbilical aperture, and apertural flaps of final and 

 preceding chambers projecting into the open 

 umbilicus. 3c, Edge view, showing high arched 

 aperture. 3d, Oblique edge view, showing 

 apertures of earlier chambers all opening into the 

 umbilicus beneath the apertural flaps. From the 

 Gault (Albian) of England. X 265. 

 Figures 4a-c. Praeglobotruncana'^ seminolensis 39 

 (Harlton) 



4a, Spiral side of holotype (USNM 71380) of 

 type species of Hedbergina Bronnimann and 

 Brown, showing rounded chambers, smooth 

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 surface, and perforate wall. 4b, Umbilical view, 

 showing extraneous material which fills the 

 umbilicus and sutural depressions, obscuring the 

 diagnostic umbilical and apertural features, and 

 the rounded instead of elongated chambers. 

 4c, Edge view. From the Cretaceous .' (reported 

 originally as Pennsylvanian) of Oklahoma. X 80. 



Figures 5a-c. Rotalipora cf. appenninica (Renz) 41 



5a, Spiral side of hypotype (USNM P4873). 

 5b, Umbilical side, showing well developed 

 extraumbilical-umbilical primary aperture and 

 small rounded sutural secondary apertures. 5c, 

 Edge view, showing high arched primary aper- 

 ture. From the Cenomanian Del Rio formation 

 of Texas. X 105. 



Figures 6a-c. Rotalipora turonica Brotzen 41 



6a, Spiral side of hypotype (USNM P50) of 

 the type species of Rotalipora. 6b, Umbilical 

 side, showing primary extraumbilical-umbilical 

 aperture and secondary sutural apertures. 6c, 

 Edge view. From the Turonian, Upper Creta- 

 ceous, of Sweden. X 85. 



Figures 7a-c. Rotalipora brotzeni (Sigal) 41 



7a, Spiral side of topotype (USNM P3930) of 

 the species designated as the type of Thalmanni- 

 nella Sigal. 7b, Umbilical side showing sutural 

 secondary apertures in addition to primary extra- 

 umbilical-umbilical aperture. 7c, Edge view. 

 From the Cenomanian of Algeria. X 105. 



