FREE: Genuine Polished Ammonite Fossil in Display Box

The listing, Genuine Polished Ammonite Fossil in Display Box has ended.

Genuine Ammonite Fossil. These polished fossils average 1 1/4" in diameter. Each one is different, so they will vary slightly in appearance, some are brown and some are black. Each specimen comes packed in a clear plastic display box with a foam insert and an information card.

Ammonites first appeared in the seas 415 million years ago. During their evolution three catastrophic events occurred. Only 10% are believed to have survived the first, during the Permian period (250 million years ago). They went on to flourish throughout the Triassic period, but at the end of this period (206 million years ago), all but one species died. Then they began to thrive from the Jurassic period until the end of the Cretaceous period, when all species of ammonites became extinct. During medieval times ammonites were believed to be petrified snakes.