Killer Kettneraspis Trilobite From Oklahoma

This is an excellent specimen of the trilobite Kettneraspis williamsi from the Haragan Formation of Oklahoma. It's prepared nicely and beautifully presented with it's spines spread wide. The small occipital spine is present as is both tiny stalk eyes, details lost on many of specimens. Very few Kettneraspis turn out this nice.

There is a repaired crack running through the left hand side of the trilobite.