A massive fossilized trilobite (Drotops species) with a small fault running through the fossil. Infilled with the mineral calcite, the fault has perfectly offset the trilobite, separating part of fossil, and cementing the two halves in place. Aside from the epic nature of the preservation, the cemented crack adds an amazing geological feature rarely seen so clearly. #earth#ecosystems#trilobite#paleontology#geology#fossils#arthropod#fossil#marinebiology