A 14-inch-long theropod track encrusted with marine life. Credit: Anthony Martin New theropod and ornithopod dinosaur tracks from the Early Cretaceous period in Australia’s Wonthaggi Formation illustrate a rich polar dinosaur ecosystem, highlighting the adaptability and diversity of these ancient creatures. A recent discovery of dinosaur tracks on Australia’s southern coast, dating back to the Early Cretaceous when Australia was still connected to Antarctica, suggests that large theropod dinosaurs thrived in this polar environment, prowling the river floodplains when the ice thawed during the summers. In a study published in the journal Alcheringa, researchers analyzed the tracks made in the...