Mammal fossils are very common at Toadstool Park. Entombed in the 30 million year old mud and siltstone are ancient camels, pigs, rhinos, deer, rabbits, pig-like creatures, predatory cats, and many others.
|Rhinos once roamed the grasslands and river bottoms in this area. Move your cursor over this rhino jaw to watch it emerge from the mudstone host rock.|
|Carnivores called beardogs (Daphoenus shown here) hunted and scavenged across the plains. These creatures have been found nearby at Agate Fossil Beds National Monument, preserved in their burrows.|
|Pig-like oreodonts are the most abundant mammal fossils found in the Toadstool sediments. These widespread omnivores died out in the late Miocene, about 10 million years ago.|
|An oreodont jaw in the field or "in situ."|
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