Specimens

Ammonites are ancient marine fossils that first appeared over 240 million years ago, descending from straight-shelled cephalopods known as bacrites...

Ammonites first appeared about 240 million years ago, though they descended from straight-shelled cephalopods called bacrites that date back to the...

 Pyritised ammonite is a fossilised shell of an extinct marine mollusk, preserved through a process where the original organic material has been re...

A pyritised ammonite is a fossilised shell of an extinct marine mollusk, preserved through a process where the original organic material has been r...

Ammonites first appeared about 240 million years ago, though they descended from straight-shelled cephalopods called bacrites that date back to the...

 Pyritised ammonite is a fossilised shell of an extinct marine mollusk, preserved through a process where the original organic material has been re...