Ancient Krakens making self-portraits?

Sanoj writes: Strange patterns of ichthyosaur bones have been found on an ancient deep-water seabed. One paleontologist has put forward the theory that these could have been the work of giant cephalopods who were eating the swimming dinosaurs and then arranging the vertebrae to resemble their own tentacles. Sound far-fetched? Apparently, the modern octopus also does this.