70. Layering, Limestone, Why Here? Why So “Recently”? Marble Canyon, Distant Cavern Connection, Perpendicular Faults, Arching, Inner Gorge, Missing Talus, Colorado Plateau, Unusual Erosion, Nankoweap Canyon. Same as item 18.
71. Side Canyons, Barbed Canyons, Slot Canyons. Same as item 19.
72. Forces, Energy, and Mechanisms. Same as item 54.
73. Kaibab Plateau. Same as item 56.
74. Missing Mesozoic Rock. Same as item 22.
75. Missing River, Missing Dirt. Same as item 21.
No evidence has been found that the Colorado River flowed to the northwest after crossing the Kaibab Plateau.92
76. Fossils. Same as item 23.
77. Tipped Layers below the Great Unconformity. Same as item 24.
78. Time or Intensity? Same as item 25.