F Fallen Rock, view, _81_ Fallen Rock Overlook, 81, _109_ Faults, 18, _64_, 65 Glade Park, 69, 120, 121 views, 122, 123 Kodels Canyon, 65, 69, _97_ views, 67, _68_, 69 Redlands, 64, 65, 89, _92_, 94 views, _66_, 90, _93_, 107, 124 Field Columbian Museum, 50 Field Museum of Natural History, 50 Fieldwork, XI Flagstaff, Ariz., 16 Flash floods, 97, 98, 108, 118 Folds, 64 drawings, 62 Grand Hogback monocline, 64 Ladder Creek monocline, 111 view, _66_ Lizard Canyon monocline, 65, 69, 93, 95, 97 views, _67_, 70, 94 San Rafael Swell, 36, 45, 128, 129 Uncompahgre arch, 72, 73, 77, 78 drawing, 75 Formations, rock. _See_ Rock formations. Fossils, algae, 27, 47 _Allosaurus_, 4, 50, 52, 60 _Apatosaurus_, 50, 52 _excelcus_, 96 _Brachiosaurus_, 50, 90 _altithorax_, 91 Burro Canyon Formation, 54 Callison, George, 50 _Camarasaurus_, 50 _Camptosaurus_, 52 Carmel Formation, 39 _Ceratosaurus_, 53 Chinle Formation, 28 clams, 53, 55 Como Bluff, 53