Rare, 2.5" Spathacalymene Trilobite - Indiana

This is an rare Silurian trilobite from the Osgood Formation in Indiana, Spathacalymene nasuta. This trilobite has a distinctive snout projection off the front of the glabella that may have been used to stir up sediment for feeding. It's good size for the species and free of the surrounding rock.