from rodents 90-100: from old world monkeys 25 Table - link million years ago
||Rakic P. Evolution of the neocortex: a perspective from developmental biology. Nat Rev Neurosci. 2009 Oct10(10):724-35. doi: 10.1038/nrn2719 p.724 left column top paragraph and p.725 figure 1PubMed ID19763105
|| Murphy WJ, Pevzner PA, O'Brien SJ. Mammalian phylogenomics comes of age. Trends Genet. 2004 Dec20(12):631-9 DOI: 10.1016/j.tig.2004.09.005  Preuss, T. M. in The Cognitive Neuroscience IV. (ed. Gazzaniga, M. S.) (The MIT Press, Cambridge, Massachusetts, 2009).PubMed ID15522459
||P.724 left column top paragraph: "Increases in size and complexity of the cerebral cortex have culminated in the modern human that separated from rodents between 90 and 100 million years ago and from the Old World monkeys, such as macaques, 25 million years before the present time (primary sources)(Fig.1)."