Cuttlefish emit Jurassic-era ink, fossils show
Although today’s cuttlefish are much smaller than ancient giant cephalopods, 160-million-year-old fossils reveal the pigment in their ink has stayed the same.
“It’s close enough that I would argue that the pigmentation in this class of animals has not evolved in 160 million years,” says University of Virginia chemist John Simon.
Full story at Futurity.
Photo credit: University of Virginia

some fossilized people never change either. LOL