Dr. Thomas Halliday successfully defended his PhD thesis against the formidable examiners Rob Asher (University of Cambridge) and Paul Barrett (Natural History Museum). Thomas's PhD thesis involved a broad array of analyses on early placental evolution, including a massive new phylogenetic analysis of Cretaceous and Paleogene mammals, analyses of evolutionary rates and disparity through the end-Cretaceous mass extinction, and assessment of the inhibitory cascade model of molar evolution across living and extinct eutherians (placentals and their stem relatives). Thomas is now moving on to a postdoctoral research position expanding this work with genomic data and Bayesian approaches, as well as more fossil data, on a Leverhulme Trust-funded project with myself and Ziheng Yang. Congratulations, Dr. Halliday!