Excavation at Big Creek, 1927 ID: 7419 | This file appears in: Dunkleosteus Fossil hunters from the Cleveland Museum of Natural History haul a concretion up the bank in Big Creek Reservation. Encased in the stone was the head and fore fins of a Cladoselache. The remains of this Devonian shark species were incredibly well-preserved within Cleveland shale; some specimens have even yielded visual traces of the Cladoselache's organs, muscles and skin. | Source: The Jesse Earl Hyde Collection, Case Western Reserve University (CWRU) Department of Geological Sciences Download Original File SourceThe Jesse Earl Hyde Collection, Case Western Reserve University (CWRU) Department of Geological Sciences "Excavation at Big Creek, 1927" appears in: Dunkleosteus