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Science

(37,917 posts)

6. Perhaps not so surprising, if you consider they are related to crinoids and blastoids ....

Fri Nov 3, 2023, 09:09 AM

Nov 2023

There were once stemless, free-floating crinoids. All head and arms.

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Starfish 'arms' are actually extensions of their head, scientists say [View all] Jilly_in_VA Nov 2023 OP

Wow Lunabell Nov 2023 #1

Doesn't surprise me at all. We've known for... TreasonousBastard Nov 2023 #2

They still have an anus -- they've just evolved into total buttheads (nt) William Seger Nov 2023 #3

Wow! Wonderfully unexpected! Judi Lynn Nov 2023 #5