Nature & Environment
Evolutionary tree of mammals
...Education (ASE). DNA Sequences: from Gatesy, J., Hayashi, C., Cronin., M.A. and Arctander, P. (1996) Evidence from milk casein genes that cetaceans are close relatives of hippopotamid actiodactyls. Molecular Biology and Evolution, 13, 954-963. Every effort has been made to contact copyright owners. If any have been inadvertently overlooked, the publishers will be pleased...