Question

what is the oldest bacteria?
bacillus F or cinobacteria
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Answer 1

Answer:

the oldest bacteria is cinobacteria

thank me mate

Answer 2

Answer:

Cinobacteria.

Explanation:

However, one particular group of bacteria, the cyanobacteria or "blue-green algae," have left a fossil record that extends far back into the Precambrian - the oldest cyanobacteria-like fossils known are nearly 3.5 billion years old, among the oldest fossils currently known.