This is a very spiny US trilobite. It is a distinct Ceratonurus sp. from the Devonian of Oklahoma. This specimen was found by Eugene Thomas in 1999, and just recently prepared. This type of trilobite has extremely thin genal spines and occipital spines, which have been meticulously prepared in a free-standing manner on this specimen. The bug is inflated and exhibits wonderful detail. Many of the long, flowing pleural spines are beautifully showcased, and even the tiny ''fringes'' of the free cheeks and tail are intact. The caramel-colored trilobite contrasts strikingly with the light-colored matrix plate. The bug is very well centered on the squared block of limestone. This is a well articulated example of one of the most sought-after trilobites from Oklahoma.