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Nature. 1978 Mar 23;272(5651):333-6.

Evolution of homeothermy in mammals.

Abstract

We propose that mammalian homeothermy was was acquired in two steps. The first step enabled mammals to invade a nocturnal niche without an increase in resting metabolic rate. The second step enabled them to invade a diurnal niche and involved the acquisition of higher body temperatures and metabolic rates.

PMID:
634356
[Indexed for MEDLINE]

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