The polychaete jaw apparatus Sciotoprion klondikensis gen. n., sp. n., family uncertain, was discovered among a number of apparatuses and isolated scolecodonts recovered from Eifelian limestone of the Columbus Formation in Delaware County, Ohio. No scolecodonts identifiable with the distinctive components of this apparatus have been previously described, suggesting that the new species either has a short geologic time-range, or is facies-dependent; it may prove of geologic value in either correlation or environmental reconstruction.