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

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 ...

“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 ...

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 ...

“Cretaceous Ammonites and Other Life with Copperplate Pictures,” published by Hokuryukan Co., also features dinosaurs, fish species and sea lilies. It is priced at 16,500 yen ($128), including ...