this post was submitted on 24 May 2026
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Science Memes

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[–] RandomStickman@fedia.io 40 points 18 hours ago (3 children)

I think it means we don't know what the ancestors of those plants are/what they evolved from. They just kinda showed up in the fossil record.

[–] Nurse_Robot@lemmy.world 28 points 18 hours ago (1 children)

Which, tbf, it's a miracle enough of the fossil record exists as is. I'm sure there was a LOT that was lost to the sands of time

[–] HonoraryMancunian@lemmy.world 7 points 9 hours ago

Iirc it's reckoned most species likely aren't known about because most places weren't conducive to fossilisation

[–] gandalf_der_12te@discuss.tchncs.de 4 points 17 hours ago (1 children)

ehh, modern biology doesn't construct evolutionary history from fossil records, but from genetic similarities.

[–] RandomStickman@fedia.io 10 points 16 hours ago (1 children)

It's impossible to compare genetics from fossils and we can't study ancient long dead species besides fossil records for the most part.

[–] gandalf_der_12te@discuss.tchncs.de -3 points 16 hours ago (1 children)

yeah that's not what i meant. phylogenetic trees are constructed by considering the genetics of recent (living) species, not from fossils.

[–] RandomStickman@fedia.io 12 points 16 hours ago (1 children)

And this post is about ancestors of ferns which are unknown so I'm not sure what are you suggesting

[–] spicehoarder@lemmy.zip 6 points 15 hours ago (1 children)
[–] RandomStickman@fedia.io 3 points 15 hours ago
[–] F_State@midwest.social 1 points 14 hours ago (1 children)

Relatively few lifeforms end up fossilizing and then some of those fossils later get eroded. The percentage that make it to the present is low.

[–] dudinax@programming.dev 4 points 11 hours ago

I'm no paleontologist but it seems like our total knowledge of certain eras comes from a few river banks collapsing on whatever lived there. That's not going to be a great representation of all life at that time.