Geology of Ohio terrestrial environment since the Permian. For instance, the main subdivisions of the Pennsylvanian: the Pottsville Group, Alleghany Group, Conemaugh Group and Monongahela Group, along with the Early Permian Dunkard Group, are each more terrestrial than the last. The region was situated inland, experiencing terrestrial erosion as the Proto-North American continent of Laurasia collided with Gondwana to form the supercontinent Pangaea. Rocks from the end of Paleozoic are best exposed in road cuts along I-77, between Canton and Marietta, I-77 from Cambridge to Bridgeport and cliffs on the Ohio River north of Marietta to East Liverpool. For 245 million years, spanning
Gondwana Link this further supports the intentions of the Gondwana Link vision. The Gondwana Link project began in 2002 as an informal coalition with the purchase of Chereninup Creek Reserve and other activities. It was not until 2012 that an incorporated body was formed with the establishment of Gondwana Link Inc. Operational areas are made up of eight major zones. In the Fitz-Stirling section of 'the Link' Greening Australia, Bush Heritage Australia, Fitzgerald Biosphere Group, Carbon Neutral and other private landholders and individuals are working together to reconnect the Stirling Range and Fitzgerald River National Parks, currently separated by only 70 km