silurian n from 425 million to 405 million years ago; first air-breathing animals Synonym(s) Silurian Silurian period
News & Articles silurian ROI holding Trashy Tuesday next week Trashy Tuesday will be held Tuesday from 3 to 7 p.m. at Richland Opportunities, Inc. ROI is located at 1100 Silurian Lane, Sidney. July 10, 2013 - Sidney Herald