Here’s what you’ll learn when you read this story:A New Zealand cave has revealed million-year-old fossils, including 12 ancient bird species and four frog species. The fossils represent 12 ancient bird species and four frog species, including several previously unknown bird species. Taken together, the fossils paint a picture of an ancient world that looks drastically different than it does today. Still, the team said more research is needed to confirm that this ancient bird could fly. “This wasn’t a missing chapter in New Zealand’s ancient history,” Scofield said, “it was a missing volume.”