503 



S p e c i e s. 



Unter- Oligocän. 



Mittel-Oligocän. 



Ob.-Oli 



gocän. 



Nordwest- 

 Deutschi. 



Cytherideis falcata 

 Rss 



— scrobiculata Lkls. 

 Paradoxostoma pro- 



ductum Brady. . 



— rectum Lkls. 



— acutum Lkls. . 



— äff cylindricum 



MÜLL. . . . . 



Cuneocythere trun- 

 cata Lkls. . . 



— praesulcata 

 Lkls 



— yibbosa Lkls. . 

 Cytherura Broeckia- 



na Brady. . . 



— macropora Lkls. 



— alata Lkls. . . 



— aspera Lkls. . . 

 Cytheropteron Bos- 



queti Sp. . . . 



— orbiculare Lkls. 



— tricorne Born. . 



— sinuatum Lkls. 



— trianguläre Lkls. 



— tricostatum Lkls. 



— caudatum Lkls. 

 Eucytherura macro- 

 pora Lkls. . . 



— echinata Lkls. . 

 Cytherella Beyrichi 



Rss 



— variopunctata 

 Lkls. . . . . 



— rugosa Lkls. 



— biplicatula Lkls. 



— undata Lkls. 



— compressa v. 



MSTR 



— rotundata Lkls. 



— confusa Lkls. . 



Summa: 



48 



|56|44| 2 |25 



ns 



ns 



ns 



17-61 14 12 1 



78 



28 



ns 



ns 



ns 



23 20 15| 

 41 



