this post was submitted on 09 Jun 2025
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[–] prettybunnys@sh.itjust.works 24 points 1 month ago (1 children)

… are they not fossils of the cyanobacteria

[–] IrateAnteater@sh.itjust.works 25 points 1 month ago (2 children)

Not by the usual definition. The carbon, etc that used to form the cyanobacteria is completely broken down and formed into miscellaneous hydrocarbons. There's no petrified remains, nor rock impressions of the bacteria.

[–] prettybunnys@sh.itjust.works 6 points 1 month ago (1 children)

FWIW that was always my concept of fossil fuels to begin with.

Like whatever you just said, but for dinosaurs and all the life from before.

[–] hypnicjerk@lemmy.world 4 points 1 month ago

dinosaurs are a basically insignificant % of the biomass by my understanding

[–] AnUnusualRelic@lemmy.world 2 points 1 month ago (1 children)

But aren't their atoms perfectly preserved? (gasping at straws)

[–] IrateAnteater@sh.itjust.works 1 points 1 month ago

Not all of them. Some of the carbon atoms will have decayed into (I think) nitrogen.