3 ms·
NB it's just (one method of) actual evidence that got pushed back, not the hypothesised origin of photosynthesis.
by 082349872349872 3y ago
NB it's just (one method of) actual evidence that got pushed back, not the hypothesised origin of photosynthesis.
- adrian_b 3y agoFor a very long time it has been pretty certain that oxygenic photosynthesis must be much older than these new fossils, perhaps even one billion years older. However the evidence has been indirect, due to the increase in abundance of certain oxidized minerals in the more recent rocks. This new research has shown direct evidence, i.e. fossils that appear to be Cyanobacteria of a kind known to be able of performing oxygenic photosynthesis.