What do some christians believe? The earth is only 6,000 years old or some shit?
A tiny fossil found by a road cutting in Pennsylvania, US, could be the earliest example of an arm bone.
The 360-370-million-year-old humerus, or upper arm bone, indicates that limbs may have evolved for use in water and not to get around on land.
It suggests the earliest limbed animals were fish navigating shallow rivers, but its place in the evolutionary tree is the subject of some controversy.
US biologists have published details of the discovery in the journal Science.
The evolutionary process that transformed fins into limbs is poorly understood, despite being a key transition in evolution.
It led to the emergence of tetrapods, four-legged vertebrates that mostly live on land. Before tetrapods, vertebrates were confined to water.
Rest of article
http://news.bbc.co.uk/2/hi/science/nature/3589133.stm
A tiny fossil found by a road cutting in Pennsylvania, US, could be the earliest example of an arm bone.
The 360-370-million-year-old humerus, or upper arm bone, indicates that limbs may have evolved for use in water and not to get around on land.
It suggests the earliest limbed animals were fish navigating shallow rivers, but its place in the evolutionary tree is the subject of some controversy.
US biologists have published details of the discovery in the journal Science.
The evolutionary process that transformed fins into limbs is poorly understood, despite being a key transition in evolution.
It led to the emergence of tetrapods, four-legged vertebrates that mostly live on land. Before tetrapods, vertebrates were confined to water.
Rest of article
http://news.bbc.co.uk/2/hi/science/nature/3589133.stm