Its fractal shell designs are so beguiling that consumer demand for the shells is pushing the animals toward extinction. Populations of the chambered nautilus are now at risk of going extinct from ...

The nautilus has existed on Earth for around 500 ... a refuge from the drastic environmental changes experienced during extinction events. Coelacanths have a unique physiological structure ...

Dinosaurs roamed the Earth from the Triassic period, about 245 million years ago, until they went extinct at the end of the Cretaceous Period, some 65 million years ago. Not much is known about the ...