Eldredgeops crassituberculata TRILOBITE Devonian Silica Shale Paulding, Ohio Size: The trilobite is about 2 cm across the cephalon. This specimen comes with the rock it was sitting in before it popped out. I can ship with or without the rock. A portion of the pygidium is missing. This is the way it was buried so there is a possibility that this is a bite mark. Price: $20 US ID number: f1092