The eyes of squids are right side out, unlike ours. I wonder what other animals have the "correct" version of these features.
Full-featured eyes have developed a few times independently [0], so it could be that mammals and squids have evolved on different branches that split before the common ancestors had eyes as a feature.
[0] https://en.wikipedia.org/wiki/Evolution_of_the_eye#Origins_o...
https://en.wikipedia.org/wiki/Tuatara#Parietal_eye_(third_ey...
Full-featured eyes have developed a few times independently [0], so it could be that mammals and squids have evolved on different branches that split before the common ancestors had eyes as a feature.
[0] https://en.wikipedia.org/wiki/Evolution_of_the_eye#Origins_o...