A pair of evolutionary ecologists from Universidad de Alcalá, working with a colleague from the New York Institute of Technology, reports that differential species proliferation was likely the key to the evolutionary increase in size of brontotheres. In their study, reported in the journal Science, Oscar Sanisidro, Juan Cantalapiedra and Matthew Mihlbachler studied the fossil record of the huge beasts and created computer simulations to show how they likely evolved.
