The Shoulder Bone's Connected to the Ear Bone...[10/16/08 Correction appended: see end of post] When our ancestors moved ashore some 360 million years ago, they underwent a lot of changes as they evolved from ocean-swimming fish to land-walking tetrapods. For one thing, they needed feet instead of fins. Paleontologists have discovered a series of fossils that document the early evolution of limb bones in our aquatic ancestors, showing how long
