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simboloRaibl Formation

225 million years ago, during the Karnian stage, the dolomite landscape was heading towards a drastic change caused by a drop in sea level with the consequent emergence of large land areas, especially towards the south of the Ampezzo basin.
The coral reefs had disappeared once and for all. Flat and extensive sea-beds were taking shape, covered by very shallow water (just a few inches), generally murky due to the movement of the waves. The nearby dry land was covered with forests. The sediments that deposited in these environments often contain: fossils of large bivalves (Trigonodus, Myoforia, Pachycardia, Ostrea); sometimes the fossilised teeth of fish and rarely the bones of land reptiles; the remains of plants, mainly conifers and equiseta, often found in the form of coal and drops of fossil resin: amber.
This amber is among the oldest in the world. In most cases, the drops are small in size – from just a few millimetres to a few centimetres. Many are cracked due to the strong pressure of the fossilisation process. Some even contain microscopic inclusions such as pollen, ash and vegetable fragments.

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