The Fields Collection
Camelops
- Name: Camelops
- Age: Late Tertiary, Miocene
- Collector: Fields and party
Mammal skull jaw attached (Oreodont)
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- Name: Mammal skull jaw attached (Oreodont)
- Age: Late Tertiary, Miocene
- Collector: Fields and party
Merychyus
- Name: Merychyus
- Age:Late Tertiary, Miocene
- Collector: Fields and party
Fields Collection
(Tertiary)
This is the most extensive Tertiary mammal collection in the Wyoming-Montana-Idaho region, especially for the Miocene. It contains a wealth of mammal fossils of the Rocky Mountain region.

