Thursday, 14 October 2010

Early life

Scientist have found the oldest evidence of life so far, it consists of tubular shapes in ancient South African rock. The fossils are estimated to be 3.34 billion years old. The evidence is not yet final, as it is not 100% certain that these tubular cavities are made by a microbe, but the scientist are confident they will prove so that is the case. 

Continuing on early life, scientist believe they have found out which was the first land plant . It is estimated  that several plant species had colonised dry land around 472 million years ago. The scientist have found fossilised cryptospores from the plants in what is today Argentina. The plants in question are early relatives of todays' liverworths. They are simple plant without roots and stems.

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