Matthew Wills was a student and postdoc in Bristol, spent a year working with Doug Erwin at the Smithsonian, and was for two years an Assistant Curator at the Oxford University Museum. He moved to Bath in 2000, where he is now part of the Milner Centre for Evolution. He is a Professor of Evolutionary Palaeobiology at the Milner Centre for Evolution, University of Bath. His interests include macroevolutionary patterns and trends, particularly the manner in which groups rapidly explore their morphological ‘design’ options.
The answer, according to evolutionary biologist Simon Conway Morris, lies in the phenomenon of evolutionary convergence: the process by which distantly related animals come to closely resemble each other.