About 540 million years ago, the oceans were an alien landscape, devoid of swimming, or nektonic, creatures. Some scientists have hypothesized, based on fossil evidence, that swimmers suddenly ...

Learn about the time period that took place 416 to 359 million years ago. 4 min read When the Devonian period dawned about 416 million years ago the planet was changing its appearance. The great ...

The Devonian (419.2-358.9 Ma) is the first geological period of the late Paleozoic, spanning about 60.3 Ma from the end of the Silurian, and its beginning is marked by the First Appearance Datum (FAD) ...

North Qiangtang Block is located at the northwestern part of China's Tibet Autonomous Region, between the Longmuco-Shuanghu and Xijinwulan-Jinshajiang suture zones. Among these regions, the Paleozoic ...

northern Nova Scotia is part of a micro-continent (Avaland) that was sandwiched during continental collision between North America and a part of Gondwana southern Nova Scotia (the Meguma Zone) evolved ...

The Tentative Lists of States Parties are published by the World Heritage Centre at its website and/or in working documents in order to ensure transparency, access to information and to facilitate ...