Sunt qui magnitudinem calvariae humanae minoratam essefuisse propter climata calidiora [[Holocaenum|Holocaeni]] credunt. [[Selectio naturalis]] frigidis corpus magnum climatibus sumere solet. Post [[Aevum glaciale|Aetetatem Glacialem]] climata fuere calidiora. Exim cranium humanum termino [[Pleistocaenum|Pleistocaeni]] crescere desiit.<ref>Henneberg, Maciej (1988). "Decrease of human skull size in the Holocene". ''Human Biology''. '''60'''(3): 395–405. JSTOR 41464021. <nowiki>PMID 3134287</nowiki>.</ref> <ref>Chao Liu, Yuchun Tang, Haitao Ge, Fen Wang et alia. Increasing breadth of the frontal lobe but decreasing height of the human brain between two Chinese samples from a Neolithic site and from living humans. ''Am J Phys Anthropol'' 154:94–103, 2014.</ref> Deminutio cerebri ob calvariam minorem effectafacta est.<ref>Christopher Stringer. Why Have Our Brains Started to Shrink? Scientific American. </ref>
