The Royal Tyrrell Museum Speaker Series returns to its regular schedule of Thursdays at 11 a.m. starting March 30. This week’s presentation is by Conrad Wilson, research assistant, University of Calgary, is entitled “The End-Devonian Mass Extinctions and the Early Evolution of the Ray-Finned Fishes.”
The actinopterygians, or ray-finned fishes, are a substantial and significant component of modern vertebrate (animals with backbones) diversity. Ray-finned fishes are bony and have paired fins that are supported by rays (the actinosts) that insert directly in the body. Examples of modern ray-finned fishes include trout, eels, and bettas. Despite their prevalence today, the early evolution of this group is poorly understood compared to other major groups, driven by a lack of informative fossil data.
In his talk, Wilson will explain how recent work on Early Carboniferous fossil sites from Nova Scotia and around the world provide new insight into the evolution of this group 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).
The Royal Tyrrell Museum’s Speaker Series talks are free and open to the public. They are held every Thursday until April 27 at 11:00 a.m. in the Museum auditorium. Past Speaker Series talks are also available on the Museum’s YouTube channel: youtube.com/user/RoyalTyrrellMuseum
