Description
This striking fossil is an authentic specimen of Harpoceras falciferum, a beautifully preserved ammonite from the famous Falciferum Zone of the Upper Lias, dating back to the Lower Jurassic period (~180 million years ago). It was discovered near Whitby, North Yorkshire, UK, one of the most renowned fossil localities in the world for Jurassic ammonites.
Harpoceras is known for its compressed, discoidal shell with sharp falcate (sickle-shaped) ribs that curve forward over the venter, giving the genus its name. These ammonites were fast-swimming nektonic predators and scavengers that lived in the warm epicontinental seas that covered much of what is now Europe during the Early Jurassic.
The dark colouration and preservation of Harpoceras specimens from Whitby are typical of the bituminous shales in which they are found. These shales, rich in organic matter, created an anoxic (oxygen-poor) environment on the seafloor, perfect for fossil preservation.
This piece comes from the Alice Purnell Collection, a recognised source of high-quality British fossils. It has been carefully cleaned and prepared to highlight the intricate shell detail and overall form of the specimen.
Item Details:
- Species: Harpoceras falciferum
- Fossil Type: Ammonite
- Geological Zone: Falciferum Zone
- Formation: Upper Lias
- Geological Period: Lower Jurassic (~180 million years ago)
- Location: Near Whitby, North Yorkshire, UK
- Collection: Alice Purnell Collection
- Condition: Natural with professional preparation
- Scale: See photo with 1cm scale rule or cube
- Certificate of Authenticity: Included
ACTUAL AS SEEN:
The image shows the exact specimen you will receive. The fossil has been professionally photographed and individually selected for quality. Due to the natural shapes of fossils, exact measurements are approximate. Colour may vary slightly depending on lighting and monitor settings. Once sold, the listing will be updated with a new specimen and fresh photos.
100% Genuine Harpoceras Fossil – Professionally Prepared – Certificate of Authenticity Included – From the Historic Jurassic Coast of Yorkshire






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