Idoceras sp. Fossil Ammonite – Lower Kimmeridgian, Jurassic – San Luis Potosi, Mexico – From Alice Purnell Collection

Description

For sale is an exceptional Idoceras sp. fossil ammonite, dating from the Lower Kimmeridgian stage of the Late Jurassic Period (approximately 157.3 to 152.1 million years ago). This fine specimen was discovered in San Luis Potosi State, Mexico, a locality known for preserving high-quality marine fossils from the Jurassic seas.

Idoceras is a well-known genus of ammonites, characterised by their typically robust, evolute shells with strong ribbing. These ancient marine molluscs once thrived in warm, shallow seas, and their fossilised remains are invaluable for understanding Jurassic marine ecosystems and for correlating rock layers across different regions.

This ammonite is part of the highly respected Alice Purnell Collection, ensuring both authenticity and excellent provenance. The photo displayed shows the actual specimen you will receive, alongside a 1cm scale cube for accurate size reference. Every fossil comes with a Certificate of Authenticity.

Key Details:

• Species: Idoceras sp.
• Fossil Type: Ammonite (extinct marine cephalopod)
• Geological Period: Lower Kimmeridgian, Jurassic (~157.3–152.1 million years ago)
• Location Found: San Luis Potosi State, Mexico
• Size: See photo with 1cm scale cube
• Authenticity: 100% Genuine Specimen – Certificate of Authenticity Included
• Photo: Actual specimen shown in the image

Scientific and Collector Importance: Ammonites like Idoceras are crucial for geological dating (biostratigraphy) and provide rich insight into the paleoenvironments of the Jurassic oceans. Their striking ribbed shells and rarity in some regions make them highly sought after by collectors and museums alike.

This specimen offers an outstanding opportunity to own a beautifully preserved piece of Jurassic marine history, perfect for serious collectors, educational displays, or natural history enthusiasts.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

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Enhance your fossil collection with this premium Idoceras sp. fossil ammonite from the renowned Alice Purnell Collection!