A study of weaning age in fossil elephants gives hints about the cause of their extinction

At the 2015 Society of Vertebrate Paleontology meetings, researcher Michael Cherney of the University of Michigan, presented findings about weaning age (i.e. when a calf stops nursing) in fossil mammoths. By studying modern African elephants at the Toledo Zoo, Cherney was able to characterize the isotopic effects of weaning in a close relative of mammoths. Decreased nursing causes predictable changes in the isotopic composition of elephant tail hairs sampled over time. —> Read More