Bi, Department of Biology, coauthored a paper published in the September 10, 2014, issue of the prestigious journal Nature.
The study by Bi and colleagues described six fossils representing three
new species from a rare group of rodent-like mammals from China. The finding supports
the idea that mammals—an extremely diverse group that includes egg-laying
monotremes such as the platypus, marsupials such as the opossum, and placentals
like humans and whales—originated at least 208 million years ago in the late Triassic,
50 millions years earlier than some previous research suggests.
Department of Biology