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Authentic unprocessed heteromorph fossilized Nostoceras malagasyense ammonite, 8.2 cm diameter, 72–83 million years old, Cretaceous, Madagascar

RON 599,99

Authentic unprocessed heteromorph Nostoceras malagasyense fossilized ammonite specimen from Madagascar, approximately 72–83 million years old. Comes with an included plastic display stand and is accompanied by a Certificate of Authenticity signed by a professional geologist who performed the expertise of the specimen. 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 heteromorph fossilized Nostoceras malagasyense ammonite

Age: approximately 72 – 83 million years old, Cretaceous period

Dimensions: approximately 8.2 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 heteromorph fossilized Nostoceras malagasyense ammonite – the one in the photos above. The product comes with a plastic display stand and a brochure containing specific geological and paleontological information, as well as a Certificate of Authenticity signed by a professional geologist who performed the expertise of the specimen.

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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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