White River Formation, Weld County Colorado
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I began collecting in Weld County after joining the Hiking Club at Colorado State University in the 1960s. My first hike was to Pawnee Buttes.
Current research puts the White River Formation starting in the Eocene and ending in the Oligocene. |
Oreodont skulls |
Camel skulls and teeth (The first two images are the same skull.) |
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Elomeryx or Agriochoerus, most likely the later. |
Rhino Incisers and Molars |
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 Balanus concavus Bronn |
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Miscellaneous Teeth |
Rabbit (Paleolagus) |
Articulated Vertebra |
Rodent Teeth |
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 Miscellaneous teeth including carnivore (early dog), deer, mesohippus (horse), and rodent |
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 Rodent teeth (This specimen is 9mm long.) |
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Mesohippus |
Turtle |
Snails |
Coprolites |
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 The last two molars in the upper jaw. A young animal—the last molar is just erupting and they are hardly worn. |
 The last two molars in the upper jaw. A young animal—the last molar is just erupting. |
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 The land snails that still live in Colorado are similar to this fossil snail. |
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