Post Syndicated from Bruce Schneier original https://www.schneier.com/blog/archives/2025/07/squid-dominated-the-oceans-in-the-late-cretaceous.html
New research:
One reason the early years of squids has been such a mystery is because squids’ lack of hard shells made their fossils hard to come by. Undeterred, the team instead focused on finding ancient squid beaks—hard mouthparts with high fossilization potential that could help the team figure out how squids evolved.
With that in mind, the team developed an advanced fossil discovery technique that completely digitized rocks with all their embedded fossils in complete 3D form. Upon using that technique on Late Cretaceous rocks from Japan, the team identified 1,000 fossilized cephalopod beaks hidden inside the rocks, which included 263 squid specimens and 40 previously unknown squid species.
The team said the number of squid fossils they found vastly outnumbered the number of bony fishes and ammonites, which are extinct shelled relatives of squids that are considered among the most successful swimmers of the Mesozoic era.
“Forty previously unknown squid species.” Wow.
As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered.