Archive image from page 20 of The dinosaurs of North America The dinosaurs of North America dinosaursofnort00mars Year: 1896 Atlantoaurus Beds Baptanodon Beds. Hallopus Beds. 'arboniferous Coal Measures, or Eosaurus Beds. Subcarboniferou s, i or Sauropus Beds. ; Dinosaurs, Brontosaurus, Morosaurus. Eiplodacus, Stegosaurus, Camptosaurus, Ceratosaurus. Mam- { mals, Dryolestes, Xtylacodon, Tinodon, Ctenacodon. First Mammals, Dromatherium. First Dinosaurs, , Ammosaurzis, Bathygnathus, Clepsy- saurus. Many footprints. Crocodiles, Belodon. Fishes, Catopterus, Ischypterus, Ptycholepis.


Archive image from page 20 of The dinosaurs of North America The dinosaurs of North America dinosaursofnort00mars Year: 1896 Atlantoaurus Beds Baptanodon Beds. Hallopus Beds. 'arboniferous Coal Measures, or Eosaurus Beds. Subcarboniferou s, i or Sauropus Beds. ; Dinosaurs, Brontosaurus, Morosaurus. Eiplodacus, Stegosaurus, Camptosaurus, Ceratosaurus. Mam- { mals, Dryolestes, Xtylacodon, Tinodon, Ctenacodon. First Mammals, Dromatherium. First Dinosaurs, , Ammosaurzis, Bathygnathus, Clepsy- saurus. Many footprints. Crocodiles, Belodon. Fishes, Catopterus, Ischypterus, Ptycholepis. First Reptiles (1) Eosaurus. Amphibians, Baphetes, Dendrerpeton, Sylonomits, Pelion. Footprints, Anthracopus, Allopus, Baropus, Dromopus, Sylo- pus, Limnopus, Xasopus. First known Amphibians (Labyrinthodonts). Footprints, Sauropus, Thenaropus. Dinichthys Beds. Lower Devonian. Dinichthys, Acanthodes, Bothriolepis, Chirolepis, Cla- dodus, Eipterus, Titanichthys. Silurian. Upper Silurian. Lower Silurian. First known Fishes. r~?jg£5sf Cambrian. Primordial. No Vertebrates known. Fig. 1.—Geological Horizoxs of Vertebrate Fossils in North America. 16 GEOL, FT 1 10


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