Plate 67. ARENOBULIMINA, PSAMMINOPELTA, MILIAMMINA, 



TROCHAMMINA 



Page 



Figures 1^. Arenobulimma paynei Tappan, new 208 

 species 



I, Paratype, distorted by crushing (USNM 

 P4379), from the Grandstand formation. 2, 

 Holotype (USNM P437S) from the Topagoruk 

 formation. 3, 4, Pyritized paratypes (USNM 

 P4384a,b) from the Topagoruk formation. All 

 X 71. 



Figures S-7. Arenobulimina torula Tappan, new 209 

 species 



5, Holotype (USNM P4393), a pyritic speci- 

 men preserving the original form. 6, 7, Crushed 

 paratypes (USNM P4396a,b), one flattened 

 longitudinally, the other crushed from above. 

 All from the Ignek formation, X 71. 

 Figures 8-10. Psamminopelta subcircularis Tappan, 213 

 new species 



8, Paratype (USNM P4454). 9, Holotype 

 (USNM P44S2). 10, Paratype (USNM P44S3). 

 All specimens are pyritized, occurring in the 

 Grandstand formation, X 71. 

 Figures 11-18, 22-24. Psamminopelta bowsheriTa.^- 211 

 pan, new genus, new species 



II, 16, 22, 24, Paritypes (USNM P4430a-d). 

 12, Paratype (USNM P4434). 13, Paratype 

 (USNM P4426), somewhat distorted in preserva- 

 tion. 14, Paratype (USNM P4429). 15, Holotype 

 (USNMP4424). 17, Paratype (USNM P4462), 

 a crushed specimen. 18, Paratype (USNM 

 P4436) from the Chandler formation. 23, Para- 

 type (USNM P4443) from the Torok formation. 



304 



Figs. 11, 12, 14-17, 22-24, from the Grand- 

 stand formation, fig. 13 from the Topagoruk 

 formation; figs. 11, 12, 16, 22-24, X 71; figs. 13- 

 15, 17, 18, X 31. 

 Figures 19-21. Miliammina awunensis Tappan, 210 

 new species 



19, Paratype (USNM P4415) from the Grand- 

 stand formation. 20, Paratype (USNM P4409). 

 21, Holotype, (USNM P4407). Both from the 

 Chandler formation. All X 71. 

 Figures 25, 26. Miliammina ischnia Tappan, new 211 

 species 



25, Paratype (USNM P4421). 26, Holotype 

 (USNM P4419). Both from the Grandstand 

 formation, X 71. 

 Figures 27a-29. Trochammina umiatensis Tappan. 214 

 new species 



27a, Dorsal view of holotype (USNM P4495). 

 27b, Ventral view. 27c, Edge view. X 71. 

 28, 29, Paratypes (USNM P4502a,b). X 54. 

 All from the Grandstand formation. 

 Figures 30a-33. Trochammina stefanssoni Tappan, 214 

 new species 



30a, Dorsal view of holotype (USNM P4490). 

 30b, Edge view. 31-33, Paratypes (USNM 

 P4492a-c), showing crushing and distortion in 

 different planes. All from the Sentinel Hill 

 member of the Schrader Bluff formation, X 71. 

 All figures are camera lucida drawings by Helen Tappan 

 Loeblich. 



