Plate 33. HETEROHELICIDAE, PLECTOFRONDICULARIIDAE, BULIMINIDAE 



Heterohelicidae -^^8"^ 



Figure 1. Tubitextularia bohemica (Sulc) 143 



1, Topotype (USNM PS437) from the Upper 

 Cretaceous, Senonian, of Vinice, Czechoslovakia. 

 Coll. by J. Sulc. X 150. 



Figures 2, 3. Tubitextularia texana (Cushman) 143 



2, 3, Hypotypes (Cushman Coll. 31834) from 

 the Upper Cretaceous, Eagle Ford formation, 1 

 mile north of Lovelace, Texas. Coll. by L. W. 

 Stephenson. X ISO. 



Figures 4, 5. Tubitextularia cretacea (Cushman) 143 



4, 5, Topotypes (USNM P5436) of the type 

 species of Rectoguembelina Cushman, from the 

 Upper Cretaceous, Arkadelphia clay, at the SW 

 corner of the NW%, sec. 6, T. 12 S., R. 23 W., on 

 the Hope-Prescott road, near Hope, Arkansas. 

 X ISO. 



Figures 6a-c. Pseudotextularia elegans (Rzehak) 138 

 6a, Side view of hypotype (Cushman Coll. 

 24384) from the Upper Cretaceous, Upper Tay- 

 lor, in road cut 0.9 mile N. of Lake City, Delta 

 County, Texas. 6b, Edge view. 6c, Apertural 

 view. X 100. 



Plectofrondiculariidae 



Figures 7a-9. Amphimorphina hauerina Neugeboren 144 

 7a, Side view of hypotype (Cushman Coll. 

 17212) from the Miocene of Kostej, Banat, 

 Hungary. 7b, Basal view, showing early quad- 

 rate outline, with gradual change to circular sec- 

 tion in the adult. Both X SO. 8, 9, Hypotypes 

 (USNM PS4S0a,b) from the Lower Miocene, La 

 Sablaine, Saubriques, Dept. Landes, France. 

 8a, Side view of megalospheric form; 8b, top 

 view, showing aperture. 9, Side view of micro- 

 spheric form, showing biserial early stage. All 

 X 75. 



Figure 10. Plectojrondicularia floridana Cushman 144 

 10a, Side view of hypotype (Cushman Coll. 

 62866) from the upper Oligocene, in a core at 96 

 to 106 feet, Trinchera formation. Bravo well No. 

 2, Yaguate area, Trujillo Province, Dominican 

 Republic. 10b, Apertural view. X 65. 



Figure 11. Plectojrondicularia garzaensis Cushman 144 

 and Siegfus 



Page 

 11, Hypotype (USNM P5438), showing envel- 

 oping biserial early chambers. From the Oli- 

 gocene Tumey formation, at 4,143 to 4,152 feet, 

 in Seaboard Oil Co. Welch No. 1 well, Fresno 

 County, California. X 65. 

 Figures 12a, 13b. Bolivinella folia (Parker and 143 

 Jones) 



12a, Side view of hypotype (USNM P5449) 

 from the Recent, at 12 fathoms, off Levuke, Fiji. 

 12b, Apertural view. 13a, Side view of hypo- 

 type (Cushman Coll. 17284) from the Recent, 

 near Nairai, Fiji. 13b, Apertural view. All 

 X 130. 



Buliminidae 



Figures 14-16c. Bolim7ioides draco (Marsson) 14S 



14, 16, Topotypes (Cushman Coll. 12108; 

 USNM P5435), from Upper Cretaceous, Cam- 

 panian, at Sassnitz, Island of Rugen, Germany. 

 Coll. by R. S. Bassler. 14, Showing interior of 

 acid-treated specimen, with smooth, gently 

 curved septa and internally tuberculate wall; 

 16a, side view, showing surface ornamentation; 

 16b, edge view; 16c, apertural view. 15, Oblique 

 edge view of hypotype (Cushman Coll. 9383), 

 from Upper Cretaceous, Pattenauer Stollen, 

 Germany, with specimen tilted to show apertural 

 opening. All X 100. 



Figures 17a-20. Bolivinita quadrilatera (Schwager) 146 

 17a, 18a, Side views of hypotypes (USNM 

 PS439a-d) from the Recent at 383 fathoms, Al- 

 batross Station DS445, Atalaya Point, Batag 

 Island, Philippines, S. 56° E., 5.3 mi. at lat. 

 12°44'42" N., long. 124°59'50" E. 17b, 18b, 

 Edge views to show variation in shape in micro- 

 spheric and megalospheric generations. 19, 20, 

 Edge views of acid-dissected specimens to show 

 internal tooth. All X 65. 



Figures 21a, b. Tappanina selmensis (Cushman) 147 

 21a, Side view of holotype (Cushman Coll. 

 19043) from the Upper Cretaceous, Selma chalk, 

 on New Corinth Highway, 13.5 miles south of 

 Selmer, McNairy County, Tennessee. 21b, 

 Apertural view. X 190. 



