Two Fossil Shrimp (Lobetelson) Pos/Neg - Illinois

This is two fossil shrimp (Lobetelson), preserved in an ironstone nodule, from the Carbondale Formation near Aurora, Illinois. This specimen is both the positive (convex) and negative (concave) sides of the fossil. The largest shrimp is 1.4" long. One side of the nodule has a repaired crack.