This is not your everyday Bumastus ioxus from the Rochester Shale of New York. This trilobite is preserved in a large bed of bryozoans! The Bumastus is complete and very 3-dimensional. The bug is quite prone and nicely articulated. Both free cheeks are present, which is somewhat unusual. The chocolate-brown exoskeleton is uncommonly intact and extremely well preserved. But the fact that it was living on the sea floor with bryozoans, brachiopos, crinoid parts, etc. is truly amazing. This is a very unique example of an unusual association of animals from the Silurian.