Description: The Bear Gulch Limestone is a deposit of some 70 square km in extent and 30 m in depth that has been a source of one of the most diverse assemblages of fossil fish with some 110 species having been described over the past 30 years. Most were new to science, and provided a unique view of the marine environment of Mississippian times. Fine preservation of both fish and invertebrates is a hallmark of these deposits, presumably due to an anoxic depositional environment. This is an example of the chondrenchelyoid Harpagofututor volsellorhinus in association with a coprolite. This shark is an unusual eel-like species which was first described in 1982 whose name is derived from the word for grappling hooks, referring to the antler-like structures possessed by the males. The coprolite is obviously from a much larger fish of unknown affinities, but the twisted shape is indicative of being expelled from a shark’s spiral valve digestive system.