The organism, a member of the Clostridium group of anaerobes, had been, according to the report, isolated from the intestine of the brown surgeonfish, Acanthurus nigrofuscus, and it is, indeed, ...

Until now, it’s been very hard for scientists to establish a detailed timeline of the early evolution of bacteria.

When you consider that viruses range in size from around 20 to 800 nanometres ... us to start looking at very small things known as microbes or microorganisms. These include bacteria and fungi ...