The Devonian Period began about 416 million years ago and ended about 359 million years ago. Major tectonic events include the closure of the Rheic Ocean, the separation of South China from Gondwana, and the resulting expansion of the Paleo-Tethys Ocean. The abundance of red sandstone on continental land also lends Laurussia the name "the Old Red Continent". Thankfully, they'll all miss. Devonian salt deposits indicative of high evaporation rates, and thus of high temperatures, range from western Canada to Ukraine and Siberia and are found locally in Australia. Since the 19th century, oil and natural gas have been produced from Devonian rocks in New York and Pennsylvania. Lobe-finned fishes are the accepted ancestors of all tetrapods. These plants transformed Earths environments, creating extensive marshlands. Scientists believe that during this period of time, there was a significant amount of evolutionary . Sea levels were exceptionally high during the Devonian, giving a widespread relatively warm and equable climate for most of the Period. The Devonian climate was mild, with warm waters. The extinction began roughly 380 million years ago, midway through the segment of . right viewDunkleosteouslife reconstruction, Mollusks (ToL: Mollusca
