396 EXPLANATION OF PLATES. 



8. Nothoceras Bohemicum, Barr. U. Silur., Bohemia, . 55 



9. Lituites simplex, Barr. Silur., Europe, . . .56 



10. Pteronautilus Seebachianus, Geinitz. Permian, Europe, 56 



11. Clymenia undulata, Miinst. Devon., Fichtelgebirge, 65 



12. 13. Subelymenia evoluta. Orb. Devon., England, 



14, 16. Aturia ziczac, Sowb. Eocene, England, 



15. Temnochilus biangulatus, Sowb. Garb., England, 

 17, 18. Trematodiscus trisulcatus, Meek and Worthen 



Subcarboniferous, Indiana, .... 



504. Gryptoceras subtuberculatus. Orb. Europe, 



Plate 32. 



19. Goniatites Henslowi, Sowb. Garb., Isle of Man, 



20, 21. Rhabdoceras Suessii, Hauer. Trias, Hallstadt, 



22. Bactrites gracilis, Sandb. Devonian, Nassau, 



23. Geratites nodosus, Brug., ..... 



24. Baculinaarcuaria,Quenst. Muschelkalk, Wurtemburg 



25. 26. Gochloceras Fischeri, Hauer. Trias, Europe, 



27. Glydonites costatus, Hauer. Trias, Europe, 



28. Glydonites delphinocephalus, Hauer. Trias, Europe 



29. Grioceras cristatus. Orb. Gault, France, 



30. Baculites anceps. Lam, Gret., France, 



31. Baculites baculoides. Orb. Cret., France, . 



32. Toxoceras bituberculatus, Orb. Neocomian, France, 



33. Ancyloceras spinigerus, Sby. Gault, England, . 



34. Anisoceras Saussureanus, Pictet. Gret., Europe, 



35. Scaphites fequalis, Sowb. Gret., Europe, . 



57 

 59 

 59 



59 

 60 



65 

 71 

 53 



68 

 87 

 71 

 70 

 70 

 86 

 86 

 86 

 85 

 85 

 85 

 84 



Plate 33. 



36. Helicoceras Teilleuxii, Orb. Jur., France, . . 86 



37. Turrilites costatus, Orb. Gret., France, . . .86 



38. Turrilites Boblayi, Orb. Cret., Europe, . . .86 



39. Heteroceras Emericianus, Orb. Gret., Europe, . 85, 86 



40. Hamites attenuatus, Sowb. Cret., Europe, . .84 



41. Hamites cylindraceus, Defr. Cret., Europe, . . 84 



42. Hamulina trinodosa, Orb. Neocomian, France, . 85 



43. Tychoceras Emericianus, Orb. Cret., France, . . 85 



44. Ammonites obtusus, Sowb. Lias, England, . . 75 



45. 46. Thysanoceras flmbriatus, Sowb. Jurassic, Europe, 76 



Plate 34. 



47, 48. Stephanocerasannulatum,Sowb. Jurassic, Europe, 80 



49, 50. Haploceras ligatum, Orb. Cret., Europe, . . 79 



51, 52. Phylloceras heteropbyllum, Sowb. Jur., Europe, 77 



53, 60. Ammonites Beaumontianus, Orb. Gret., Europe, 63 



54, 55. Ammonites capricornus,Schlotli. Jur., Europe, . 63 



