Nature and Biodiversity
Is this proof that an asteroid killed the dinosaurs?
Many scientists believe that an underwater crater off the coast of Mexico proves that an asteroid wiped out the dinosaurs.
My interests include the diversification of life through time, quality of the fossil record, shapes of phylogenies, age-clade congruence, mass extinctions, Triassic ecosystem evolution, basal diapsid phylogeny, basal archosaurs and the origin of the dinosaurs.
Current research projects focus on the end-Permian mass extinction, the greatest mass extinction of all time, and especially its effects on terrestrial organisms. This involves fieldwork in Russia and China. I am also working on large-scale aspects of dating the tree of life, the use of phylogenetic means to assess the quality of the rock and fossil records, and studying macroevolution using comparative phylogenetics approaches.
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