Abundant, well-preserved 110-120-million-year-old footprints, belonging to a large bipedal ancestor of modern-day crocodiles, were recently discovered in the Lower Cretaceous Jinju Formation in South Korea. Professor Emeritus Martin Lockley, paleontologist Kyung Soo Kim (of Chinju National University of Education in South Korea), and colleagues describe the puzzling fossil tracks in a paper published last week in Scientific Reports.
Mysterious crocodile relative may have walked on two legs
National Geographic, June 11
Fossil Footprints Help Uncover the Mysteries of Bipedal Crocodiles
Scientific American, June 11