LifeSpine of early crawling fish was becoming more like a land animal's Scans show that the spine and ribs of Tiktaalik, one of the first fish to crawl on land, had features that are more like those of early land animals than fish 51¶¯Âþ
LifeAncient bird with a movable beak rewrites the story of avian evolution A skull bone from 67 million years ago reveals that ancestors of modern birds had jointed beaks, not immobile ones as biologists have long thought 51¶¯Âþ