Based on the fossil record, ammonites came in a wide range of sizes and shapes, from smaller than an inch to as large as nine feet wide. Some ammonites had long, straight shells, while others had ...

Ammonites are extinct marine mollusks that thrived ... They were spiral-shelled creatures, closely related to modern cephalopods like squid and octopuses. In fact, they emerged over 100 million ...

The ammonite belonged to the same group as octopi, squid and nautilidae. Ammonites appeared around 400 million years ago and thrived in seas around the world, but they went extinct 65 million ...

Ammonites are an extinct group of marine mollusks that belonged to the class Cephalopoda, which also includes modern-day squid, octopus, and cuttlefish Dr. Joseph Flannery-Sutherland, the lead ...

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 ...