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Lovegrove 2012		Lovegrove, B.G. 2012. The evolution of mammalian body temperature: the Cenozoic supraendothermic pulses. J. Comp. Physiol. B. 182: 579–589.															
Lovegrove 2013		Lovegrove, B.G. & Mowoe, M.O. 2013. The evolution of mammal body sizes: responses to Cenozoic climate change in North American mammals. J. Evol. Biol. 26: 1317–1329															
Lovegrove 2012a		Lovegrove, B.G. 2012a. The evolution of endothermy in Cenozoic mammals: a plesiomorphic-apomorphic continuum. Biol. Rev. 87: 128–162.															
Lunn 1948		Lunn, H.F. 1948. The comparative anatomy of the inguinal ligament. J. Anat. 82: 58–67.															
Freeman 1990		Freeman, S. 1990. The evolution of the scrotum – a new hypothesis. J. Theor. Biol. 145: 429–445.															
Kleisner 2010		Kleisner, K., Ivell, R. & Flegr, J. 2010. The evolutionary history of testicular externalization and the origin of the scrotum. J. Biosci. 35: 27–37.