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oxygen replenished via endocardial tubes (sh.itjust.works)
submitted 2 weeks ago by Zuriz@sh.itjust.works to c/science_memes@mander.xyz
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Idea from a comment on a post long ago

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[-] Confused_Emus@lemmy.dbzer0.com 6 points 2 weeks ago

Now I’m curious if it used to be normally “unfolded” somewhere in our evolutionary past.

[-] ArchmageAzor@lemmy.world 11 points 2 weeks ago

Simpler animals like insects and molluscs can have tube-like hearts, so it's possible.

this post was submitted on 12 Sep 2025
284 points (89.2% liked)

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