Bumastus ioxus (Hall 1852).
Fine well preserved complete 3D specimen on matrix. Both eyes preserved. Repair along left hand side of the trilobite but otherwise excellent. If perfect would be nearer twice the price.
Silurian, Rochester Shale.
Caleb's Quarry, Middleport, Orleans County, New York State, USA.
Trilobite : 2.5 cm long.
