Cladodus sp. with Orodus sp.
Square block of grey grit stone. On the upper surface is a tall tooth from the primitive Carboniferous shark, Cladodus. Lying next to it is a flatter pavement tooth from the shark, Orodus. Nice combination of two different sharks.
Lower Carboniferous, Mississippian, Upper Burlington Formation.
Henderson County, Illinois, USA.
Matrix : 4 x 4 x 1.5cm.