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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

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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

Absaroka Sea continues to retreat

Triassic is very terrestrial Period






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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

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 d’Halloy in 1822



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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


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