Origin


Ammonites are marine creatures that first appeared during the Devonian period, about 400 million years ago.

They belong to the same group as octopuses and squids, the cephalopods, and had a hard shell on the outside.

Most are thought to have lived in warm, shallow seas, slowly floating and protecting themselves from predators.

At the end of the Cretaceous period, about 66 million years ago, amidst major changes, they quietly disappeared from the Earth.

Structure — Structure


Ammonite shells are made up of three elements: the outer shell, septa, and siphuncle.

The interior was divided into small chambers called "gas chambers," and they adjusted their buoyancy by changing the amount of gas and liquid.

Their spiral shape forms a logarithmic spiral, growing at a ratio close to the Fibonacci sequence.

As one of the orders created by nature, they continue to be a fascinating subject for many researchers.

Fossilization — The Process of Fossilization


After their lives ended, the shells sank to the bottom of the sea, encased in sediment, and went to sleep.

Over long periods, organic matter is replaced by minerals, taking the form of fossils.

The main minerals involved in this replacement are calcite, pyrite, and silica, and the color and texture vary depending on the environment.

In Morocco and Madagascar, beautiful specimens are still being found due to the uplift of geological strata.

Scientific Value


Ammonites evolved rapidly, and their appearance changed significantly with each geological period.

For this reason, they are widely used as "index fossils" for determining the age of rock layers.

They are indispensable for research in geology and paleontology,

and each individual specimen provides a clue to understanding Earth's history.

In Spinos — As a shape remaining in stone


At Spinos, we preserve the original form of fossils as much as possible.

Each specimen is a unique creation of the Earth, and no two are alike.


Suture lines, layered formations, and the gleam of crystals each possess a unique character.

Within each specimen, a landscape shaped by vast stretches of time lies quietly hidden.

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