Mass Extinctions, Ray-Finned Fishes, and the Closing of Romer's Gap

Royal Tyrrell Museum Speaker Series 2017
Conrad Wilson, University of Calgary, explains how recent work on Early Carboniferous fossil sites from Nova Scotia and around the world provide new insight into the evolution of ray-finned fishes and how the development of the modern vertebrates may have been influenced by the mass extinction at the end of the Devonian Period (419 - 359 million years ago).
Originally published April 3, 2017.