This is a complete specimen of Isotelus mafritzi from the Ordovician of Canada. This trilobite is inflated and wonderfully articulated. The fine detail of the bug is easily seen. The dark brownish-black color of the trilobite is natural and contrasts well with the greyish matrix. The bug is nicely presented on the limestone block. This is a nice example of Isotelus mafritzi from Canada.