Why would this possibly be true? Cyanobacteria emerged somewhere around 1.6-2 billion years later than the earliest life we have evidence for, certainly no earlier than 1 billion years:
The Evolutionary Diversification of Cyanobacteria: Molecular- Phylogenetic and Paleontological Perspectives
"Time Calibration for the Tree of Life. Integrating molecular phylo-genetic, physiological, paleontological, and geochemical data, we
propose that the clade of cyanobacteria marked by heterocyst and akinete differentiation evolved once between 2,450 and 2,100 Ma." [Ma = million years ago]
Are you aware of just how diverse cyanobacteria are? Or that their genetic diversity provides another strong layer of evidence for evolution?
Phenotypic and genetic diversification of Pseudanabaena spp. (cyanobacteria).
Cyanobacteria are unusually morphologically and genetically diverse. We know of 60 plus basic morphotypes that we can trace genetically back to cyanobacteria in the 1.5-2 Ma period alone.
There are entire TEXT BOOKS written about them and their evolutionary history. Clearly geneticists and biologists have no issues with cyanobacteria and evolution, otherwise they wouldn't be using it as a teaching example.
No, no my point was that on ToE, Cyanobacteria are way too complex to be the EARLIEST life form.
And that takes us back to my point, and that is that the more scientific progress we make, the high complexity of even the simplest life forms becomes ever more apparent, and daunting, from a naturalist rationale standpoint.
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