THE%20PERMIAN

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THE PERMIAN
Reptiles Dimetrodon Mammal-like Reptiles
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THE PERMIAN
Eggs Amniotic egg allowed Organisms to
become terrestrial
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THE PERMIAN
Plants Glossopteris
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THE PERMIAN
Permian Extinction
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THE TRIASSIC
The Break-up of Pangaea Three-fold division of
rocks in Germany Named by Frederich von Alberti
in 1834
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THE TRIASSIC
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THE TRIASSIC
Absaroka Sea continues to retreat Triassic is
very terrestrial Period
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THE TRIASSIC
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THE TRIASSIC
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THE TRIASSIC
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THE TRIASSIC
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THE TRIASSIC
Joshua Chamberlain, left Little Round Top, Battle
of Gettysburg 3 July, 1863
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THE TRIASSIC
Chinle Formation, Petrified Forest National Park
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THE TRIASSIC
Chinle Formation, Painted Desert
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THE TRIASSIC
Triassic Reptiles Mammal-like
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THE TRIASSIC
Dilophosaurus
Triassic Reptiles Diversification of dinosaurs
Coelophysis
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THE TRIASSIC
First Marine Reptiles
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THE TRIASSIC
Mammals Evolve
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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
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THE JURASSIC
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THE JURASSIC
Nevadan Orogeny
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THE JURASSIC
Nevadan Orogeny
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THE JURASSIC
Nevadan Orogeny Emplacement of batholiths
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THE JURASSIC
Cordilleran Orogeny
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THE JURASSIC
Cordilleran Orogeny
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THE JURASSIC
Cordilleran Orogeny
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THE JURASSIC
Cordilleran Orogeny
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THE JURASSIC
Absaroka Sea continues to retreat Jurassic is
very terrestrial Period Transgression of Zuni Sea
at end of Jurassic
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THE JURASSIC
Dinosaurs Ornithischian (Bird-hipped)
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THE JURASSIC
Dinosaurs Ornithischian (Bird-hipped)
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THE JURASSIC
Dinosaurs Saurichian (Lizard-hipped) Therapods
Velociraptor
Tyrannosaurus
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THE JURASSIC
Dinosaurs Saurichian (Lizard-hipped) Sauropods
Apatosaurus
Diplodicus
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THE JURASSIC
Birds Actually arose from LIZARD-hipped
Dinosaurs Archeopteryx
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THE JURASSIC
Angiosperms Arose in Late Jurassic
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THE JURASSIC
Arches National Park
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THE JURASSIC
Canyonlands National Park
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THE JURASSIC
Colorado National Monument
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THE JURASSIC
Colorado National Monument Morrison Formation
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THE JURASSIC
More Morrison Formation
I-70 Roadcut Morrison, CO
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THE CRETACEOUS
The Age of Dinosaurs II Named for the latin
word for chalk Named by Omalius dHalloy in 1822
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THE CRETACEOUS
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THE CRETACEOUS
Orogenic Events Cordilleran continues
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THE CRETACEOUS
Orogenic Events - Sevier Orogeny
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THE CRETACEOUS
Orogenic Events - Sevier Orogeny
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THE CRETACEOUS
Orogenic Events
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THE CRETACEOUS
Orogenic Events Laramide Orogeny
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THE CRETACEOUS
Orogenic Events Laramide Orogeny
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THE CRETACEOUS
Cretaceous is very marine Period Transgression of
Zuni Sea continues into the K
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THE CRETACEOUS
Craton flooded for the last time
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THE CRETACEOUS
Craton flooded for the last time
Pierre Shale
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THE CRETACEOUS
Craton flooded for the last time
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THE CRETACEOUS
Ammonites Complex coiling and suture patterns
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THE CRETACEOUS
Craton flooded for the last time
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THE CRETACEOUS
Bryce Canyon National Park
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THE CRETACEOUS
Mesa Verde National Park
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THE CRETACEOUS
The Cretaceous-Tertiary Extinction
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THE CRETACEOUS
The K-T Extinction