What is cooksonia?

Have you heard of a plant called Coolsonia? In any case , you are unlikely to have seen it, since cook sonia is an extinct family of primitive land plants.


Cooksonia grew on earth almost 425 million years ago, in what is now Siberia, the eastern USA and Brazil. These small plants were just a few centimeters tall, and had a simple structure. They had no leaves or flowers nor visible roots. They consisted only of a stalk with a few branches. Each branch ended in a structure that contained spores. The cooksonia is considered significant known plant. It truly represent a milestone in the evolution of plants.  

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