This is a great trilobite from the Mississippian of Missouri. Complete Mississippian trilobites are very scarce in the fossil record. This is an excellent specimen of Breviphillipsia sampsoni from the Chouteau Formation. The specimen is complete and displays near-perfect articulation. Both free cheeks are present and tightly attached. The prone trilobite is preserved in a 3-dimensional manner. The specimen exhibits very fine detail. The eyes of the trilobite are easily seen. The glabella is very pustulose. The trilobite has great brownish color and contrasts nicely with the gray matrix. It is well positioned on the natural plate of shale. This specimen was found by Doug DeRosear in 1988. The collecting site where this trilobite was found is now buried beneath tons of rock. This is a near-perfect specimen of a Mississippian trilobite.