Early Cambrian fossil uncovers key buoyancy structure at the dawn of cephalopod evolution
Jul 29, 2026
Extant and ancient cephalopods—including octopuses, squids, extinct ammonites, cuttlefish and nautiluses—have all had to solve the problem of buoyancy, whether they have hard external shells or not.
https://phys.org/news/2026-07-early-cambrian-fossil-uncovers-key.html
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