books.google.co.uk - The Devonian was a peculiar period, characterized by simplified plate tectonic configurations, climatic overheating and widely flooded continents. The bloom of fishes and ammonoids, extensive reef complexes, and the conquest of land indicate major biosphere innovations, punctuated by many global events,...http://books.google.co.uk/books/about/Devonian_events_and_correlations.html?id=3hLRklY9pYEC&utm_source=gb-gplus-shareDevonian events and correlations
