Let´s be honest about this. Had this fossil not been mentioned in the popular Guiness Book of World Records, absolutely nobody would have given a damn. Who cares if octopi evolved 150 million years later than previously thought? But sure, some pesky creationist might dub this "The Piltdown Octopus" and make it just as famous as the bombardier beetle!
From the article (see link below):
>>>A fossil that was fundamental to describing the evolution of octopuses turns out to have been an impostor, all along.
>>>The famous 300-million-year-old Pohlsepia mazonensis, discovered in 2000 and later lauded in the Guiness Book of World Records as the oldest known octopus species, has been reclassified as a nautiloid – a shelled cephalopod closely related to the nautiluses living in the ocean today.
>>>This means that scientists are going to have to redraw the cephalopod family tree – the discovery pushes the record of nautiloid soft tissue back by around 220 million years, and brings the earliest evidence for octopuses forward by around 150 million years.
World´s oldest known "octopus" turns out to be an entirely different animal