Octopi do evolutionary hypothesis few favours.

'95 million year old' octopi have been discovered, fossilised.
In the words of Evidence News, this is as likely as finding 'a fossil sneeze'.
Few creatures rot as quickly as an octopus and so a rapid, catastrophic event will have been necessary for them to have been enveloped and deposited into 'cretaceous' limestone.
Hmm. Catastrophic event, you say?
- Yes. And also these rather aged creatures have not changed from the modern cephalopods. Hmm.
Always remember - evolution is not scientific fact. It hardly ranks as an opinion - it is a belief system!