Pohlsepia mazonensis is named after its discoverer, James Pohl, and the type locality, Mazon Creek. Its habitat was the shallows seawards of a major river delta in what at that time was an inland ocean between the Midwest and the Appalachians.
Pohlsepia mazonensis is named for its discoverer, James Pohl, and the location where it was found, Mazon Creek. Its habitat consisted of shallow waters adjacent to a major river delta in an inland body of water that spanned between the Midwest and the Appalachians at that time.