The concretion being opened by Peter Bungart dates back to the Devonian. Known as the "Age of Fishes," sharks and fishes diversified and became more common during this geologic period which lasted from 416 million to 358 million years ago. The land that currently makes up Cuyahoga County was located just below the equator, and was covered by an inland sea. | Source: The Jesse Earl Hyde Collection, Case Western Reserve University (CWRU) Department of Geological SciencesDownload Original File
Source
The Jesse Earl Hyde Collection, Case Western Reserve University (CWRU) Department of Geological Sciences
"A Concretion in Big Creek Reservation, 1926" appears in: Dunkleosteus
