@inbook {vanDijk2001_520, title = {Protein sequence signatures support the African clade of mammals}, booktitle = {Proceedings of the National Academy of Sciences of the United States of America}, volume = {98}, year = {2001}, pages = {188{\textendash}193}, author = {van Dijk, M. A. M. and Madsen, O. and Catzeflis, F. and Stanhope, M. J. and de Jong, W. W. and Pagel, M.} }