Poster illustrated by Kyle Hartshorn Part of the "Life in Ancient Ohio" series, this beautiful poster depicts what Ohio would have looked like about 445 million years ago. The ancient marine life of the Late Ordovician included fascinating animals, from ...

by Gregory A. Schumacher, Brian E. Mott, and Michael P. Angle Written for a wide audience — from students and amateur geologists to experienced geoscience and engineering professionals — Information Circular (IC) 63 details the state's surficial deposits and near-surface bedrock units....

by Keith A. Milam Guidebook 22 offers a useful tool to aid anyone in exploring what is now known as the Serpent Mound Impact Structure. The name derives from the Paleo-Indian effigy mound in the shape of a snake, located...

by C. B. Nelson, T. R. Valachovics, M. P. Angle, K. M. Hardin, T. A. Nash, P. N. Spahr, M. Raab, and C. J. Coe The Hydrogeologic Settings of Ohio map depicts the hydrogeology of the state's aquifer systems. Forty hydrogeologic...

Poster illustrated by Kyle Hartshorn Part of the "Life in Ancient Ohio" series, this beautiful poster depicts what Ohio would have looked like about 440 million years ago. The ancient sea life of the Early Silurian included an abundance of...

by Mark E. Wolfe, Brittany D. Parrick, and J. D. Stucker Guidebook 23 provides readers with a terrific tool to explore the region known as the "Little Smokies" — Shawnee State Park and State Forest. This guidebook is designed for a broad...

Illustrated by Kyle HartshornPart of the "Life in Ancient Ohio" series, this beautiful poster depicts a night scene of Ohio's ancient marine environment about 385 million years ago. The sea life of the Middle Devonian (the "Age of Fishes") included...

by D. M. Powers, J. F. Laine, and R. R. Pavey This map depicts the topographic relief of Ohio's land scape using color to represent elevation intervals. The colorized topography has been digitally shaded from the northwest slightly above the...

Poster illustrated by Kyle HartshornPart of the "Life in Ancient Ohio" series, this beautiful poster depicts a "golden hour" scene of Ohio's ancient Ice Age environment about 20,000 years ago, as glaciers were receding from Ohio. The plant and animal...

by C. B. Nelson, T. R. Valachovics, M. P. Angle, K. M. Hardin, T. A. Nash, P. N. Spahr, M. Raab, and C. J. Coe The Groundwater Vulnerability Index Map of Ohio depicts an area's vulnerability to groundwater contamination based...

Poster illustrated by Kyle HartshornPart of the "Life in Ancient Ohio" series, this beautiful poster depicts a lush environment of Ohio's ancient swampy, terrestrial environment about 305 million years ago. The plant and animal life during the Late Pennsylvanian included...

Poster illustrated by Kyle HartshornPart of the "Life in Ancient Ohio" series, this striking poster depicts a summer scene of Ohio's ancient terrestrial environment about 295 million years ago. The plant and animal life of the Early Permian included a...