Bumastus bouchardi trilobite fossil of Wenlock age, Silurian. This specimen was found in Listice, Czechoslovakia. Only the pygidium of this specimen has been preserved and is 3 x 2 cm in dimensions found within a limestone matrix. These trilobites lived on and within shallow marine sediments, they had a smooth, rounded head or Cephalon which they used for burrowing. It had pronounced, large compound eyes which gave it a wide field of vision to detect movements and predators. This specimen comes in a small plastic bad with an information label.