Sharks' Diversity Remained Static When End-Cretaceous Mass Extinction Wiped Out Dinosaurs: Study

https://ift.tt/eA8V8J Researchers say that the survival and evolution of sharks through multiple mass extinctions received little analytical attention. A new study has now attempted to shed some light on their evolution during the catastrophic event. The researchers studied the morphology of 1,239 fossil shark teeth to see how their diversity was affected during the mass extinction. Gadgets 360 https://ift.tt/2yDpjSA