""Descriptions Of New Species Of Fossils, From The Marshall Group Of Michigan, And Its Supposed Equivalent, In Other States"" is a scientific book written by Alexander Winchell and published in 1865. The book focuses on the discovery and description of new species of fossils found in the Marshall Group of Michigan, as well as in other states. The Marshall Group is a geological formation that dates back to the Devonian period, which lasted from approximately...