Trace fossils penetrating siltstone beds in the Chagrin Formation (Late Devonian, Famennian) at four localities in northeastern Ohio are herein named Chagrinichnites osgoodi. It is suggested that the trace maker was an echinocarid arthropod that made the trace as an escape response as it moved upward and backward through the sediment. This type of escape trace supports the notion that siltstone layers in the Chagrin Formation represent episodic storm events in an otherwise low energy, shallow marine environment.--Journal abstract.