THE PERMIAN Reptiles Dimetrodon Mammallike Reptiles THE PERMIAN
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THE PERMIAN Reptiles Dimetrodon Mammal-like Reptiles
THE PERMIAN Eggs Amniotic egg allowed Organisms to become terrestrial
THE PERMIAN Plants Glossopteris
THE PERMIAN Permian Extinction
THE TRIASSIC The Break-up of Pangaea Three-fold division of rocks in Germany Named by Frederich von Alberti in 1834
THE TRIASSIC
THE TRIASSIC Absaroka Sea continues to retreat Triassic is very terrestrial Period
THE TRIASSIC
THE TRIASSIC
THE TRIASSIC
THE TRIASSIC
THE TRIASSIC Joshua Chamberlain, left Little Round Top, Battle of Gettysburg 3 July, 1863
THE TRIASSIC Chinle Formation, Petrified Forest National Park
THE TRIASSIC Chinle Formation, Painted Desert
THE TRIASSIC Triassic Reptiles Mammal-like
THE TRIASSIC Triassic Reptiles Diversification of dinosaurs Coelophysis Dilophosaurus
THE TRIASSIC First Marine Reptiles
THE TRIASSIC Mammals Evolve
THE JURASSIC Named for strata in Jura Mountains between France and Switzerland Named by Alexander von Humbolt in 1795 Redefined by Leopold von Buch in 1839
THE JURASSIC
THE JURASSIC Nevadan Orogeny
THE JURASSIC Nevadan Orogeny
THE JURASSIC Nevadan Orogeny Emplacement of batholiths
THE JURASSIC Cordilleran Orogeny
THE JURASSIC Cordilleran Orogeny
THE JURASSIC Cordilleran Orogeny
THE JURASSIC Cordilleran Orogeny
THE JURASSIC Absaroka Sea continues to retreat Jurassic is very terrestrial Period Transgression of Zuni Sea at end of Jurassic
THE JURASSIC Dinosaurs Ornithischian (Bird-hipped)
THE JURASSIC Dinosaurs Ornithischian (Bird-hipped)
THE JURASSIC Dinosaurs Saurichian (Lizard-hipped) Therapods Velociraptor Tyrannosaurus
THE JURASSIC Dinosaurs Saurichian (Lizard-hipped) Sauropods Apatosaurus Diplodicus
THE JURASSIC Birds Actually arose from LIZARD-hipped Dinosaurs Archeopteryx
THE JURASSIC Angiosperms Arose in Late Jurassic
THE JURASSIC Arches National Park
THE JURASSIC Canyonlands National Park
THE JURASSIC Colorado National Monument
THE JURASSIC Colorado National Monument Morrison Formation
THE JURASSIC More Morrison Formation I-70 Roadcut Morrison, CO
THE CRETACEOUS The Age of Dinosaurs II Named for the latin word for chalk Named by Omalius d’Halloy in 1822
THE CRETACEOUS
THE CRETACEOUS Orogenic Events – Cordilleran continues
THE CRETACEOUS Orogenic Events - Sevier Orogeny
THE CRETACEOUS Orogenic Events - Sevier Orogeny
THE CRETACEOUS Orogenic Events
THE CRETACEOUS Orogenic Events – Laramide Orogeny
THE CRETACEOUS Orogenic Events – Laramide Orogeny
THE CRETACEOUS Cretaceous is very marine Period Transgression of Zuni Sea continues into the K
THE CRETACEOUS Craton flooded for the last time
THE CRETACEOUS Craton flooded for the last time Pierre Shale
THE CRETACEOUS Craton flooded for the last time
THE CRETACEOUS Ammonites Complex coiling and suture patterns
THE CRETACEOUS Craton flooded for the last time
THE CRETACEOUS Bryce Canyon National Park
THE CRETACEOUS Mesa Verde National Park
THE CRETACEOUS The Cretaceous-Tertiary Extinction
THE CRETACEOUS The K-T Extinction
