Researchers may have discovered Mississippi's largest ever mosasaur after pulling a Cretaceous-aged fossil out of a riverbed ...

This was the time of T-Rex when massive dinosaurs roamed the land. Meanwhile, ammonites thrived in the sea. Their fossils can ...

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 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 ...

We don’t know what animal it was which was thus changed into stone.” An ammonite fossil collected from more than 5,000 metres above sea-level in the Himalayas in Asia. Unlike snails, ammonites coil in ...

Geologists near Starkville found a bone of a Mosasaurus hoffmannii, one of the biggest species of mosasaurs, which could reach lengths of 50 feet.

“Those ammonites might have stored gases inside their shells and stood on the sea floor with the buoyancy force,” Muramiya said. The ammonite belonged to the same group as octopi, squid and ...