Explore the fascinating world of prehistoric sharks and their response to climate change in this 43-minute lecture from the Royal Tyrrell Museum Speaker Series. Delve into Dr. Mike Newbrey's research on the growth biology and geographic distribution of Cretaceous sharks, examining the effects of ancient climate shifts on these ancient predators. Learn about shark diversity, economic impacts, and comparisons with bony fish responses to temperature changes. Discover specific case studies focusing on Lonchidion and Cardabiodon species, gaining insights into how climate fluctuations shaped the evolution and distribution of these ancient marine creatures.