Everybody knows how oysters make pearls-- a bit of sand or grit slips through the protective barrier of their outer shell, irritating the mollusk's body, and the invertebrate encircles the invader ...

After the End-Permian extinction 252.6 million years ago, ammonoids diversified and recovered 10 to 30 times faster than previous estimates. This discovery results from Franco-Swiss collaboration ...

Ammonoids, ancestors of today's octopus, squid and cuttlefish, bobbed and jetted their way through the oceans for around 340 million years beginning long before the age of the dinosaurs. If you look ...

Ammonites changed their reproductive strategy from initially few and large offspring to numerous and small hatchlings. Thanks to their many offspring, they survived three mass extinctions, a research ...

April 13 (UPI) --Ammonoids, an ancient group of mollusks, used the wavy lines found inside their shells to fine-tune their buoyancy, according to a new study. Prior to their disappearance at the end ...

Palaeontologists have long sought to explain the diversification of individual clades to whole biotas at global scales. Advances in our understanding of the spatial distribution of the fossil record ...

A few weeks ago, during a trip to the Scripps Institution of Oceanography’s Birch Aquarium, I bumped into a nautilus. More or less. Admittedly there was an aquarium pane and many gallons of water ...

After the End-Permian extinction 250 million years ago, ammonoids diversified and recovered 10 to 30 times faster than previous estimates. The surprising discovery raises questions about ...

Researchers previously focused on the roles of these complex structures in resisting pressure on the shell, but new researchers provide evidence for a different hypothesis. Complex sutures, they found ...