Morrison Formation of Emery County, Utah, USA. The fossil dates to the Upper Jurassic Period (about 150 million years ago).
The fossil was collected as part of joint research program with the Cincinnati Museum Center (accession number VP7180).
The picture only shows the first four vertebrae of the more than dozen recovered at the site. This dinosaur was once known as the Brontosaurus.
Fossil on display at Cincinnati Museum of Natural History & Science as of August 2013.
Learn more about this dinosaur at wikipedia.org.