The Silurian Period is a geological time frame that lasted from about 443 to 419 million years ago. It follows the Ordovician Period and precedes the Devonian Period. During this time, the Earth experienced significant changes, including the stabilization of continents and the development of diverse marine life. In the Silurian, the first vascular plants began to appear on land, marking an important step in the evolution of terrestrial ecosystems. The oceans were home to various organisms, including early fish and coral reefs, which thrived in the warm, shallow waters.