Paleontologists have uncovered the first postcranial remains — skeletal remains apart from the skull — of Vintana sertichi, the largest known mammal from the Mesozoic (252 to 66 million years ago) of the supercontinent Gondwana. This is an artist’s rendering of Vintana sertichi. Image credit: © Lucille Betti-Nash. Vintana sertichi is a groundhog-like animal that lived in what is now Madagascar during the Late Cretaceous epoch, about...