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Ancient seaweed that have been found growing in the deep sea are "living fossils", researchers have reported. The two types of seaweed, which grow more than 200m underwater, represent previously unrecognised ancient forms of algae, say the scientists. As such, the algae could belong to the earliest of all known green plants, diverging up to one billion years ago from the ancestor of all such plants.

2010-11-18

 algae biodiversity ocean evolution seaweed genetics chlorophyll photosynthesis plant life