These Ammonite fossilS are the preserved shell of an extinct marine mollusc that lived millions of years ago. Ammonites were relatives of modern squids and octopuses, but they had hard, coiled shells divided into chambers. When they died, their shells sank to the seafloor and were buried by sediment. Over time, minerals replaced the original shell material, turning it into stone. Today, ammonite fossils are super common finds and are often used by scientists to tell the age of rock layers because they evolved quickly and had worldwide ranges
These Ammonite fossilS are the preserved shell of an extinct marine mollusc that lived millions of years ago. Ammonites were relatives of modern squids and octopuses, but they had hard, coiled shells divided into chambers. When they died, their shells sank to the seafloor and were buried by sediment. Over time, minerals replaced the original shell material, turning it into stone. Today, ammonite fossils are super common finds and are often used by scientists to tell the age of rock layers because they evolved quickly and had worldwide ranges
