The catastrophe that allowed mammals to reign supreme

Humans are so comfortable with their self-declared dominance over the rest of life, appointing themselves titular head of an entire geological age in the ‘Anthropocene’, that we forget how we are party to a much wider evolutionary alliance: the mammals. Steve Brusatte announces that mammals reign supreme upon this planet. One thinks especially of their place as climax predators in almost all regions – the lions, tigers, wolves and bears for example – or the sheer weight of numbers of the megafauna in the African savanna, the herds of wildebeest, antelopes and zebras. Mammals are more widely spread over the planetary surface than all higher organisms, with the possible exception