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From: RonO <rokimoto557@gmail.com>
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Subject: 77 Mollusk genomes
Date: Sun, 2 Mar 2025 11:11:29 -0600
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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. 
  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