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[North Dakota: Legendary. Follow the trail of legends]

Prehistoric Life of North Dakota

John W. Hoganson
North Dakota Geological Survey

Fossil image with towns Mammut americanum Borealosuchus Equus Champosaurus gigas Bison latifrons Titanoides Plesiadapis Palaeocastor Plastomenus Dinictis Hesperocyon Palaeolagus Hyaenodon Triceratops horridus Ischyromys Merycoidodon Poebrotherium Brontops Edmontosaurus Archaeotherium Mesohippus bairdi Coryphodon Ptilodus Alphadon Rana pipiens Cervis elaphus Tyrannosaurus rex Megalonyx jeffersonii Troodon Amebelodon Ischyodus Opisthotriton Myledaphus bipartitus Castor Perca flavescens Enchodus Homo sapiens Carcharias Bison Archelon Squalus Hesperornis regalis Mammuthus primigenius Plioplatecarpus Elasmosaurus Xiphactinus Tusosteuthis longa
Each Icon on the state map is a link to addittional information
CRETACEOUS
TERTIARY
QUATERNARY
   
PALEOCENE
MIOCENE

Coleharbor Group (glacial drift)

   
 
Golden Valley Formation
 
Arikaree Formation
 
lake sediment (silt and clay)
glacial sediment (till)
   
EOCENE - OLIGOCENE
river and beach sediment (sand and gravel)
 
Flat to rolling land
Niobrara
Lakes and Rivers
 
Hilly Land
Last modified December 1, 2006