Friday Squid Blogging: The Origin and Propagation of Squid

A blog post summarizes research on squid evolution, noting that scientists analyzed fossilized beaks—the hard parts most likely to be preserved—to reveal squid fossils. The study suggests squids rapidly diversified after losing their shells, achieving high diversity by about 100 million years ago, and that this radiation was not triggered by the end-Cretaceous extinction event.