Re: 77 Mollusk genomes

On Sun, 2 Mar 2025 11:11:29 -0600, RonO <rokimoto557@gmail.com> wrote:

https://phys.org/news/2025-02-mollusk-family-tree-evolutionary.html
>
https://www.science.org/doi/10.1126/science.ads0215
>
Mollusca has over 100,000 species with more to be discovered according
to the Phys.org article.  Their brain development rivals that of
vertebrates.  My guess is that octopus are smarter than your dog or cat.

That's a low bar; it doesn't take much brains to spend so much time
licking your butt.

 Their brains are a lot smaller and more efficient than ours and
evolved in a cold blooded organism.
>
Their phylogenetic analysis indicates that mollusca separated from
annelids (segmented worms) before or around the start of the Cambrian
explosion over 550 million years ago.
>
Snails and Nautiloids diverged around 511 million years ago and squid
and Octopus diverged after the Permian extinction 250 million years ago.
 They have the separation at around 214 million years ago.
>
Ron Okimoto

--
To know less than we don't know is the nature of most knowledge