Miocene Period, 15 million years B.P. A pair of fossil bird beg bones, showing dark staining from the surrounding material they were buried in, and clear hollow structure inside. 6.8 grams total, 60-74 mm (2 3/8 - 3 in.). From Peace River, Florida, USA. Private Shropshire, UK collection. The Peace River area yields some of the best fossils in Florida, USA, including teeth of the giant megalodon shark. The rarest of fossils from this area are the bird bones, particularly leg and wing bones. [2, No Reserve]