Gheerbrant, Emmanuel et al 2014. Ocepeia (Middle Paleocene of Morocco): the oldest skull of an Afrotherian mammal. PLoS ONE9 (2): e89739. [3]
pnas.org
Stanhope M.J. et al 1998. Molecular evidence for multiple origins of Insectivora and for a new order of endemic African insectivore mammals. Proceedings of the National Academy of Sciences95 (17): 9967–9972. [1]