1. Maconiceras
    [Maconiceras sp. (?m)]
  2. Macrocephalites
    [Macrocephalites (Kamptokephalites) aff. cossmani (m)]
  3. Macrocephalites
    [Macrocephalites (Kamptokephalites) lophopleurus (m)]
  4. Macrocephalites
    [Macrocephalites (Macrocephalites) gracilis (M)]
  5. Macrocephalites
    [Macrocephalites (Macrocephalites) gracilis (m)]
  6. Macrocephalites
    [Macrocephalites (Macrocephalites) lamellosus (M)]
  7. Macrocephalites
    [Macrocephalites (Macrocephalites) sp. (M)]
  8. Macrocephalites
    [Macrocephalites (Macrocephalites) subtrapezinus (M)]
  9. Macrocephalites
    [Macrocephalites (Macrocephalites) verus (M)]
  10. Macroscaphites
    [Macroscaphites striatisulcatus]
  11. Macroscaphites
    [Macroscaphites striatisulcatus]
  12. Macroscaphites
    [Macroscaphites yvani (M)]
  13. Macroscaphites
    [Macroscaphites yvani (m)]
  14. Mammites
    [Mammites asflaensis]
  15. Mammites
    [Mammites asflaensis]
  16. Mammites
    [Mammites mohovanensis]
  17. Mammites
    [Mammites nodosoides]
  18. Mammites
    [Mammites nodosoides]
  19. Mammites
    [Mammites nodosoides]
  20. Mammites
    [Mammites nodosoides]
  21. Mammites
    [Mammites nodosoides]
  22. Mammites
    [Mammites nodosoides]
  23. Mammites
    [Mammites nodosoides]
  24. Mammites
    [Mammites nodosoides]
  25. Mammites
    [Mammites nodosoides]
  26. Mammites
    [Mammites nodosoides]
  27. Mammites
    [Mammites nodosoides]
  28. Mantelliceras
    [Mantelliceras cantianum]
  29. Mantelliceras
    [Mantelliceras cantianum]
  30. Mantelliceras
    [Mantelliceras dixoni (M)]
  31. Mantelliceras
    [Mantelliceras mantelli (M)]
  32. Mantelliceras
    [Mantelliceras picteti (M)]
  33. Mantelliceras
    [Mantelliceras saxbii (M)]
  34. Maorites
    [Maorites (Maorites) subtilistriatus]
  35. Mariella
    [Mariella (Mariella) cenomanensis]
  36. Mariella
    [Mariella (Mariella) dorsetensis]
  37. Mariella
    [Mariella (Mariella) essenensis]
  38. Mariella
    [Mariella (Mariella) essenensis]
  39. Mariella
    [Mariella (Mariella) gallienii]
  40. Martelites
    [Martelites sarasini]
  41. Melchiorites
    [Melchiorites emerici]
  42. Melchiorites
    [Melchiorites strigosus]
  43. Menabites
    [Menabites (Menabites) lenoblei]
  44. Menuites
    [Menuites "wittekindi"]
  45. Menuites
    [Menuites "wittekindi"]
  46. Menuites
    [Menuites arrialoorensis (M)]
  47. Menuites
    [Menuites fresvillensis (M)]
  48. Menuites
    [Menuites sp.]
  49. Menuites
    [Menuites sp. (m)]
  50. Mesoturrilites
    [Mesoturrilites aumalensis]
  51. Mesoturrilites
    [Mesoturrilites serpuliforme]
  52. Metaderoceras
    [Metaderoceras gr. muticum]
  53. Metaderoceras
    [Metaderoceras venarense]
  54. Metagarantiana
    [Metagarantiana media (M)]
  55. Metaplacenticeras
    [Metaplacenticeras subtilistriatum]
  56. Metasigaloceras
    [Metasigaloceras rusticum]
  57. Metatissotia
    [Metatissotia ewaldi]
  58. Metengonoceras
    [Metengonoceras dumbli]
  59. Metoicoceras
    [Metoicoceras geslinianum]
  60. Micromphalites
    [Micromphalites (Clydomphalites) clydocromphalus]
  61. Mollistephanus
    [Mollistephanus mollis]
  62. Morphoceras
    [Morphoceras (Ebrayiceras) pseudoanceps (m)]
  63. Morphoceras
    [Morphoceras jactatum (M)]
  64. Morphoceras
    [Morphoceras macrescens (M)]
  65. Morphoceras
    [Morphoceras macrescens (M)]
  66. Morphoceras
    [Morphoceras macrescens (M)]
  67. Morphoceras
    [Morphoceras multiforme (M)]
  68. Morrisiceras
    [Morrisiceras morrisi (M) juv.]
  69. Morrowites
    ["Morrowites dixeyi"]
  70. Morrowites
    ["Morrowites dixeyi"]
  71. Morrowites
    [Morrowites wingi]
  72. Morrowites
    [Morrowites wingi]
  73. Mortoniceras
    [Mortoniceras (Angolaites) wintoni]
  74. Mortoniceras
    [Mortoniceras (Mortoniceras) cf. inflatum]
  75. Mortoniceras
    [Mortoniceras (Mortoniceras) kiliani]
  76. Mortoniceras
    [Mortoniceras (Mortoniceras) pricei]
  77. Mortoniceras
    [Mortoniceras (Subschloenbachia) rostratum]
  78. Moutoniceras
    [Moutoniceras moutonianum]
  79. Mucrodactylites
    [Mucrodactylites mucronatus (m)]
  80. Muniericeras
    [Muniericeras bilottei]
  81. Muniericeras
    [Muniericeras bilottei]
  82. Muniericeras
    [Muniericeras palmarum]