Paleo Friends:
A catastrophic volcanic eruption in the Great Basin of the United States buried millions of Oligocene mammals, birds, insects, plants, and other life forms in ash. It was a trajic event that left a magnificent record in the rocks of Oregon, South Dakota, Nebraska, and other states. The mammal jaws shown in the link below exhibit only two creatures of this period: Mesohippus (an ancient horse) and Merycoidodon (an oreodont). These Brule Formation Mammal jaws are the same age as the John Day Plant fossils I posted earlier.
http://www.flickr.com/photos/92652163@N06/8428794220/in/photostream/lightbox/
A catastrophic volcanic eruption in the Great Basin of the United States buried millions of Oligocene mammals, birds, insects, plants, and other life forms in ash. It was a trajic event that left a magnificent record in the rocks of Oregon, South Dakota, Nebraska, and other states. The mammal jaws shown in the link below exhibit only two creatures of this period: Mesohippus (an ancient horse) and Merycoidodon (an oreodont). These Brule Formation Mammal jaws are the same age as the John Day Plant fossils I posted earlier.
http://www.flickr.com/photos/92652163@N06/8428794220/in/photostream/lightbox/