Researchers are studying the feeding structures of archaeopteryx, the earliest known bird, which had a unique mouth with complex tongue bones and fleshy "teeth" on the roof of its mouth. These features may have helped it obtain the food it needed for flight, suggesting that its feeding habits were similar to those of modern birds. The study of archaeopteryx's anatomy is providing insight into the link between birds and dinosaurs, although one outlet mentions a chinese velociraptor cousin, its relevance to the archaeopteryx study is unclear.