While back in London recently for my PhD viva, the opportunity came up to speak with the Communications Office at Imperial College about some of my research. Naturally I pounced at the chance to discuss my research and broadcast it to a wider audience. The short audio for the interview is now online here, and we discuss everything from the impact of changing climates on biodiversity to giant, dinosaur-devouring crocodiles! Enjoy 🙂
Dr Jon Tennant studied these creatures as part of his PhD in theDepartment of Earth Science and Engineering. He was exploring the biodiversity and the extinction of some tetrapods, which is a classification for all creatures with four limbs.
Dr Tennant, who is also a science communicator and children’s author, looked at some of the most fearsome tetrapods of them all – crocodilians. These creatures, which alligators and crocodiles are modern ancestors of, lived on Earth over one hundred million years ago in the deserts, coasts, oceans and even the artic regions of our planet. Some, like the Sarchosuchus, were the size of double-decker buses, and going by the fossil evidence, fed on dinosaurs, who were rival ‘apex’ predators.
Dr Tennant discovered in his research that changes in sea level, brought on by fluctuations in the climate and continent movements, changed the world of tetrapods like the Sarchosuchus forever. Now, he is embarking on a six-month exploration of the planet, including some of the regions where modern crocodilians live. Colin Smith caught up with Dr Tennant to talk about his favourite ancient crocodilians and how changes in early Earth impacted on their biodiversity.