9. Loliginidae 



10. Sepiolidae 



11. Sepiiclae 



12. Belosepiidae 

 18. Spirulidae 



14. Belopteridae 



15. Belemnitidae 



[Mijopsidae.) 



< Loliginidae, Ad. I, 35. 



< Loliginidae, Ad. I, 41. 

 = Sepiidae, Ad. I, 41. 



< Sepiidae, Chenu I, 46. 

 = Spirulidae, Ad. 1, 44. 



< Spirulidae, Chenu I, 51. 

 = Belemnitidae, Chenu I, 46. 



Order IL— TETRABRANCHIATA. 



[Naidiloidea.) 



16. Nothoceratidae = NotJwceras, Barr. 11, 72. 



17. Bathmoceratidae = Batkmoceras, Barr. 11, 74. 



18. TrocJioceratidae = Tivchoceras, Barr. II, 74. 



* 

 = Nautilus, Barr. II, 128. 



= Bercoceras, Barr. II, 152. 



= Gyroceras, Barr. II, 156. 



= Lituites, Barr. II, 168. 



23. Phragmoceratidae= Phragmoceras, B. II, 189. 



24. Gomphoceratidae = Gomphoceras, B. II, 243. 



25. Cijrtoceratidae = Cyrtoceras, Chenu I, 73. 



26. Orthoceratidae > Orthoceras, Chenu I, 59. 



19. Nantilidae 



20. Hercoceratidae 



2 1 . Gyroceraiidae 

 Tl. Lituitidae 



27. Ascoceratidae 



Ascoceras, Barr. II, 334. 



i Apkragmites, Barr. II, 366. 



[ Glossoceras, Barr. II, 372. 



