230 



EVOLUTION IN THE PAST 



Chalk formations, iii 

 Chameleon, 135 

 Cheetahs, 173 

 Cheirolepis, 41 

 Cheiroptera. See Bats 

 Chelonians — 



Permian, 64 



Triassic, 79 



Jurassic, 94 



Cretaceous, 102 



Eocene, 134 



Miocene, 166 



Pliocene, 180 



Criptodira, 79, 94 



Pleurodira, 79, 94, 134 

 Chevrotains — 



Eocene, 129 



Oligocene, 144 



Pliocene, 179 



Water, 179 

 Chimaera, 40, 87 

 Chimpanzee, 155, 179, 215 

 Chirocentrus, 106 

 Chitons, 24, 137 

 Chonetes, 32 



Cirripedes. See Barnacles 

 Civets, 127, 147, 173 

 Cladophora, 17 

 Cladoselache, 39 

 Clams, 85, 137 

 Clematis, 154 

 Club-moss. See Lycopods 

 Coal, 51 

 Cobra, 167 

 Coccosteus, 39 

 Cockles, 73 

 Cockroaches, 52 

 Coelacanthidae, 58, 87, 105 

 Coelentera, 12 



(See also Cladophora, Corals, Grap- 

 tohtes, JeUy^sh.) 

 Coleoptera. See Beetles 

 Compsognathus, 92 

 Condylarthra, 117, 119 

 Coney. See Hyrax 

 Conifers, 68, 70, 88, 112, 132, 153, 154 

 Corals — 



Cambrian, 17 



Ordovician, 21 



Silurian, 28 



Devonian, 47 



Carboniferous, 53 



Corals (cont.) — 



Permian, 66 



Triassic, 72 



Jurassic, 82 



Cretaceous, no 



Eocene, 138 



Oligocene, 140 



Red, no 



Reef-buUding, 28 

 Cordaites, 49, 50, 71 

 Cormorants, 112, 150 

 Corjrphodonts, 122 

 Cowries, 85, 137 

 Crabs — 



Jurassic, 86 



Cretaceous, 106 



Eocene, 137 

 Cranes, 131, 151 

 Craniidae, 23, 109 

 Crawfish, 106 

 Creodonts — 



Eocene, 118, 127 



Oligocene, 146 



Miocene, 156 



Phocene, 173 

 Cretaceous Period, 98 

 Crickets, 89 

 Crinoids — 



Cambrian, 17 



Ordovician, 22 



Silurian, 29 



Devonian, 46 



Carboniferous, 53 



Permian, 66 



Triassic, 72 



Jurassic, 82 



Cretaceous, no 



Eocene, 138 



Emancipation, 53, 82, no 



Sanitary modifications, 30, 46, 53, 66 

 Crocodiles — 



Triassic, 77 



Jurassic, 93 



Cretaceous, loc 



Eocene, 134 



Miocene, 166 



Pliocene, 179 



— backbone, 93, 100 



— breathing modification, 93, 100 



— sea-roving, 94, loi 

 [See also Gavials.) 



Cromagnon, 199 



