$39.00
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ITEM INFO:
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Price includes display box, the items you receive will be of similar quality to the ones shown above!
The full iridescent ammonite and the two cut half ammonites were found in the Mahajanga province of Madagascar, these ammonites have taken on a brilliant, rainbow iridescence. This is the result of an opal-like layer known as nacre (or mother of pearl), which is the same type of substance that gives the inside of modern oyster and abalone shells their rainbow hue. Under the right conditions, chalky sediment can preserve the nacre found on ammonoid shells during the fossilization process—leading to a beautifully colored fossil.
The second genus you will receive is named Perisphinctes, they feature tight ridges along their shells. They were unearthed in Madagascar, and date back to 174.1 million years ago to the beginning of the Jurassic period!
Ammonites are the fossilized remains of ammonoids, a group of extinct mollusk-like animals that are most closely related to squids and cuttlefish today. These creatures filled earth's oceans for over 340 million years until they vanished, along with the dinosaurs, in the mass extinction event at the end of the Cretaceous period.
Size: Approximately 2cm-3cm
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