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Authentic unprocessed fossilized Perisphinctes sp. ammonite, 6.7 cm diameter, 150 million years old, Jurassic, Madagascar

RON 84,99

Authentic Ammonite specimen Perisphinctes sp. unprocessed fossil from Madagascar, approximately 150 million years old. The specimen consists of a whole unprocessed Ammonite and comes with a plastic display stand included. A superb fossil, with impressive natural geometry, contemporary with the dinosaurs!

Due to its age, the specimen may have imperfections and repaired areas (glued sections) that are perfectly normal and inevitable for such an old fossil, but it is in good overall condition. Please carefully examine the product photos to identify natural imperfections and any possible repairs to the specimen.

Click here for more general information about fossils

Specimen: authentic unprocessed fossilized Perisphinctes sp. ammonite

Age: approximately 150 million years old, Jurassic period

Dimensions: approximately 6.7 cm maximum diameter (Please take a look at the photo where the specimen is placed next to a ruler or held in a hand to get an idea of its size)

Country of origin: Tulear, Madagascar

The product consists of an authentic unprocessed fossilized Perisphinctes sp. ammonite – the one in the photos above. The product comes with a plastic display stand and a brochure containing specific geological and paleontological information.

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Description

Ammonites are an extinct group of cephalopods related to octopuses, cuttlefish, and nautiluses, which appeared 400 million years ago, during the Devonian period, and went extinct 65 million years ago, during the Cretaceous period, at the same time as the dinosaurs.

Members of this group had coiled shells of various sizes, made of aragonite, the mineral that also forms pearls. Their shells were divided into several internal chambers. They regulated buoyancy using gas in the shell chambers and propelled themselves by expelling water. Along with fish, they were prey for aquatic reptiles such as plesiosaurs and mosasaurs. Depending on the species, ammonites ranged from a few millimetres to 1.4 metres in diameter.

Ammonites are found fossilized in many locations around the globe, with those from Madagascar being particularly famous.

Ammonite Illustration
Ammonite Illustration – © artist Cristiana-Oana Băleanu for dinoshop.ro – the image is for illustrative purposes only and is not included with the product

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