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Showing below up to 50 results in range #41 to #90.

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41. Middle Devonian Series‏‎ (50 members)
42. Shale‏‎ (49 members)
43. Modesto Formation‏‎ (46 members)
44. Plattin Subgroup‏‎ (46 members)
45. Ancell Group‏‎ (42 members)
46. Elviran Stage‏‎ (38 members)
47. Mattoon Formation‏‎ (38 members)
48. Kimmswick Subgroup‏‎ (36 members)
49. Alexandrian Series‏‎ (34 members)
50. McCormick Group‏‎ (32 members)
51. Embayment Megagroup‏‎ (32 members)
52. Dresbachian Stage‏‎ (32 members)
53. Bond Formation‏‎ (30 members)
54. Cincinnatian Series‏‎ (30 members)
55. Glasford Formation‏‎ (28 members)
56. Wedron Group‏‎ (28 members)
57. Gasperian Stage‏‎ (28 members)
58. Abandoned Names‏‎ (27 members)
59. Atokan Series‏‎ (26 members)
60. Dunleith Formation‏‎ (26 members)
61. Mesozoic Erathem‏‎ (24 members)
62. Bulletin 104‏‎ (24 members)
63. Abbott Formation‏‎ (24 members)
64. Knobs Megagroup‏‎ (24 members)
65. Trempealeauan Stage‏‎ (24 members)
66. Tertiary System‏‎ (22 members)
67. Banner Formation‏‎ (22 members)
68. Mason Group‏‎ (22 members)
69. Holocene Series‏‎ (20 members)
70. Maquoketa Shale Group‏‎ (20 members)
71. New Albany Shale Group‏‎ (20 members)
72. Cretaceous System‏‎ (20 members)
73. Niagaran Series‏‎ (20 members)
74. Decorah Subgroup‏‎ (20 members)
75. Potsdam Sandstone Megagroup‏‎ (18 members)
76. Kinderhookian Series‏‎ (18 members)
77. Virgilian Series‏‎ (18 members)
78. Franconian Stage‏‎ (18 members)
79. Soil‏‎ (16 members)
80. Genevievian Stage‏‎ (16 members)
81. Grand Detour Formation‏‎ (16 members)
82. Canadian Series‏‎ (16 members)
83. Mt. Simon Sandstone‏‎ (16 members)
84. Gulfian Series‏‎ (15 members)
85. Cedar Bluff Limestone Group‏‎ (14 members)
86. Upper Devonian Series‏‎ (14 members)
87. Paint Creek Group‏‎ (14 members)
88. West Baden Group‏‎ (14 members)
89. Okaw Group‏‎ (14 members)
90. Morrowan Series‏‎ (14 members)

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