But for some animal groups, such as cephalopods — which include soft-bodied animals such as squids and octopuses, as well as hard-shelled creatures ...
... cephalopods, a group that encompasses octopuses and squid. The study reveals that the Z chromosome, first evolved in an ancient ancestor of octopuses ...
We are a participant in the Amazon Services LLC Associates Program, an affiliate program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.