Plate 71. PALLAIMORPHINA 



Figures la-9c. Pallaimorphina ruckerae Tappan, 221 

 new species 



1, Paratype (USNM P4669) showing gradual 

 chamber enlargement, low aperture and narrow 

 lip. 2, Holotype (USNM P4664). 3, Paratype 

 (USNM P4665). 4, Small paratype (USNM 

 P4680) 5, 6, Paratypes (USNM P4666a, b). 7, 8 

 308 



Paratypes (USNM P4671a, b). 9, Paratype 

 (USNM P4673). All from the Grandstand for- 

 mation; a, dorsal view; b, ventral view; c, edge 

 view. Figs. 1, 4-9, X ISO; figs. 2, 3, X 200. 



All figures are camera lucida drawings by Patricia 

 Isham. 



