The maximum body mass of terrestrial mammals evolve with time dilation and a downward bend
The maximum mass for trunked mammals evolved so fast that the increase in resource handling and/or resource availability outran the evolutionary increase in metabolic pace, with a rββ/rα-ratio of 0.1 and a dw/dt-exponent of 0.79 (Fig. 1). A rββ/rα-ratio of 0.1 is also found for the maximum mass across all species of terrestrial mammals (Witting, 2016).
- Witting, L. 2016. The natural selection of metabolism bends body mass evolution in time. bioRxiv http://dx.doi.org/10.1101/088997.