1. Ochetoceras
    [Ochetoceras canaliculatum morphe canaliculatum (M)]
  2. Ochetoceras
    [Ochetoceras canaliculatum morphe hispidum (M)]
  3. Ochetoceras
    [Ochetoceras canaliculatum morphe subclausum (m)]
  4. Ochetoceras
    [Ochetoceras canaliculatum morphe subclausum (m)]
  5. Ochetoceras
    [Ochetoceras hispidiforme morphe basseae (M)]
  6. Ochetoceras
    [Ochetoceras hispidiforme morphe hispidiforme (M)]
  7. Ochetoceras
    [Ochetoceras pamprouxense]
  8. Oecoptychius
    [Oecoptychius refractus (m)]
  9. Oecotraustes
    [Oecotraustes genicularis (m)]
  10. Oecotraustes
    [Oecotraustes umbilicatus (m)]
  11. Oistoceras
    [Oistoceras lincolnense]
  12. Olcostephanus
    [Olcostephanus (Jeannoticeras) jeannoti]
  13. Olcostephanus
    [Olcostephanus (Olcostephanus) atherstoni (M)]
  14. Olcostephanus
    [Olcostephanus (Olcostephanus) atherstoni (M)]
  15. Olcostephanus
    [Olcostephanus (Olcostephanus) sayni (M)]
  16. Olcostephanus
    [Olcostephanus (Olcostephanus) sayni (M)]
  17. Olcostephanus
    [Olcostephanus (Olcostephanus) sp.]
  18. Onychoceras
    [Onychoceras differens (m)]
  19. Oosterella
    [Oosterella cultrata]
  20. Oppelia
    [Oppelia subcostata]
  21. Oppelia
    [Oppelia subradiata]
  22. Oraniceras
    [Oraniceras gyrumbilicum (M)]
  23. Oraniceras
    [Oraniceras gyrumbilicum (M)]
  24. Oraniceras
    [Oraniceras wuerttembergicum (m)]
  25. Orbignyiceras
    [Orbignyiceras pseudopunctatum (M)]
  26. Orbignyiceras
    [Orbignyiceras trezeense (M)]
  27. Orionoides
    ["Orionoides" anguinus]
  28. Orionoides
    [Orionoides indicus (M)]
  29. Orionoides
    [Orionoides indicus (M)]
  30. Orionoides
    [Orionoides indicus (M) juv.]
  31. Orthaspidoceras
    [Orthaspidoceras lallierianum]
  32. Orthaspidoceras
    [Orthaspidoceras lallierianum]
  33. Orthaspidoceras
    [Orthaspidoceras lallierianum]
  34. Orthaspidoceras
    [Orthaspidoceras lallierianum juv.]
  35. Orthoceras
    [? Orthoceras sp.]
  36. Orthogarantiana
    [Orthogarantiana densicostata (M)]
  37. Orthogarantiana
    [Orthogarantiana haugi (M)]
  38. Osperleioceras
    [Osperleioceras bicarinatum]
  39. Ostlingoceras
    [Ostlingoceras (Ostlingoceras) aff. colcanapi]
  40. Ostlingoceras
    [Ostlingoceras (Ostlingoceras) puzosianum]
  41. Otohoplites
    [Otohoplites raulinianus]
  42. Otohoplites
    [Otohoplites raulinianus]
  43. Otohoplites
    [Otohoplites subhilli forme bulliensis]
  44. Otohoplites
    [Otohoplites subhilli forme bulliensis]
  45. Otoites
    [Otoites contractus (m)]
  46. Oxycerites
    [Oxycerites limosus (M)]
  47. Oxycerites
    [Oxycerites limosus (M)]
  48. Oxycerites
    [Oxycerites orbis (M)]
  49. Oxycerites
    [Oxycerites seebachi (M)]
  50. Oxycerites
    [Oxycerites sp.]
  51. Oxydiscites
    [Oxydiscites multiformis (M)]
  52. Oxytropidoceras
    [Oxytropidoceras (Mirapelia) sp.]
  53. Oxytropidoceras
    [Oxytropidoceras (Venezoliceras) karsteni]