Ammonites were shelled cephalopods that died out about 66 million years ago. Fossils of them are found all around the world, sometimes in very large concentrations. The often tightly wound shells of ...

Opalized ammonite fossils are some of the most unique and ... They were spiral-shelled creatures, closely related to modern cephalopods like squid and octopuses. In fact, they emerged over 100 ...

Scientists believed that ammonites, like modern cephalopods, had soft body tissue with tentacles attached to their heads for catching prey. Fossil evidence indicates they had sharp, beaklike jaws ...

The chambered, or pearly, nautilus (Nautilus pompilius) is a charismatic cephalopod species known for its exceptional spiraling, chambered shell. It belongs to a family that has barely changed since ...

I am responsible for the care of the fossil Cephalopod collection and the recent and fossil Brachiopod collections within the Invertebrates and plants division of the department of Earth Sciences. My ...

How can the soft bodies of coleoid cephalopods so aptly hide in their environment? Why must they? What cells and specialized organs make such crypsis possible for one of the older evolutionary ...