article_snippet: The remarkable discovery was made by finding birds had regrown a bone previously discarded by dinosaurs millions of years ago.
article_snippet: A study found that 230 million years ago, two-legged dinosaurs no longer required the strong wrists of A study four-legged brethren, and thus A study became weak.
article_snippet: But according to the research, a bone previously discarded by dinosaurs millions of years ago reappeared when dinosaurs evolved into birds and took flight.
article_snippet: A study found A study disappeared in bird-like dinosaurs, but modern birds later evolved to once again use a bone previously discarded by dinosaurs millions of years ago.