trilobite is a member of the Order Proetida, Family Brachymetopidae
from the Devonian Haragan Formation deposits of Coal County, Oklahoma.
It is Cordania falcata, and is 20 mm long and 15 mm across at the
genal spines. It is quite 3-D in preservation, and displays well
on its 2.0 inch by 4.0 inch matrix base, with the fine detail adding
to the overall great preservation.