This scan, performed by the Idaho Virtualization Lab of the Idaho Museum of Natural History, is of an ancient Bison latifrons skull owned by the Bureau of Reclamation. This cranium and horn cores is named Mary Lou. It was scanned at life-size, so please reduce (to between 5-6%) when 3D printing.
The specimen, owned by the Bureau of Reclamation, was part of a larger Bison latifrons 3D scanning project to bring fossils to the public virtually.
For more information, please visit http://virtual.imnh.isu.edu/BoR.