Fossils for Sale - High-quality BRITISH and WORLDWIDE Fossils. An impressive selection of fossils, including Ammonites, Trilobites, Belemnites, Fossil Fish, Fossil Shark Teeth, Fossilised Insects in Amber, Dinosaurs, and Reptiles. UK Fossils was formed in 1988 and collects and preps our own fossils in the heart of the Jurassic Coast, collecting fossils from Lyme Regis, Charmouth and Somerset. Our passion for fossils is reflected in our carefully curated collection, which includes some of the rarest and most unique specimens available.

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Hildoceras bifrons fossil ammonite – upper lias, lower jurassic – runswick bay, whitby, yorkshire, uk – alice purnell collection

Hildoceras bifrons fossil ammonite – upper lias, lower jurassic – runswick bay, whitby, yorkshire, uk – alice purnell collection

Original price was: £24.00.Current price is: £21.60.

This is a superb example of Hildoceras bifrons, a classic ammonite species from the Upper Lias of the Lower Jurassic period, approximately 180 million years old. This particular specimen was collected from Runswick Bay, near Whitby, North Yorkshire, a region celebrated worldwide for its exceptional ammonite preservation and historical fossil significance.

Hildoceras bifrons is named after St. Hilda of Whitby, and is characterised by its involute shell, fine ribbing, and a pronounced keel. These ammonites were fast-swimming, predatory marine cephalopods that thrived in the ancient Jurassic seas. Their presence in the fossil record offers insights into biostratigraphy and Jurassic marine ecosystems.

The geology of the region—specifically the Jet Rock and Grey Shales of the Whitby Mudstone Formation—provides perfect conditions for fossil preservation. The dark, finely laminated shales formed in anoxic seafloor environments, allowing exquisite fossilisation of marine life with minimal disturbance from scavengers or currents.

This fossil is part of the Alice Purnell Collection, a highly regarded British collection known for exceptional fossil quality and historical importance. It has been expertly cleaned and prepared to display the natural structure and aesthetics of this iconic ammonite.

Item Details:

  • Species: Hildoceras bifrons
  • Fossil Type: Ammonite
  • Geological Formation: Whitby Mudstone Formation (Jet Rock / Grey Shales)
  • Geological Age: Lower Jurassic (Toarcian Stage, ~180 million years ago)
  • Stratigraphy: Upper Lias
  • Location: Runswick Bay, Whitby, North Yorkshire, UK
  • Collection: Alice Purnell Collection
  • Condition: Natural fossil with professional preparation
  • Scale Reference: Please refer to photo with 1cm cube/rule
  • Certificate of Authenticity: Included with purchase

ACTUAL AS SEEN:

The image shows the exact specimen you will receive. It has been carefully hand-selected and photographed to ensure you get a faithful visual representation. While we aim for accurate measurements, irregular fossil shapes may cause slight variation. Lighting and monitor differences may affect colour slightly. Once this item is sold, the listing will be updated with a new fossil and fresh imagery.

100% Genuine Jurassic Ammonite – Professionally Prepared – Certificate of Authenticity Included – From the World-Famous Whitby Coastline

(Actual as seen)

Only 1 left in stock

SKU: UF3118 Categories: ,

Description

This is a superb example of Hildoceras bifrons, a classic ammonite species from the Upper Lias of the Lower Jurassic period, approximately 180 million years old. This particular specimen was collected from Runswick Bay, near Whitby, North Yorkshire, a region celebrated worldwide for its exceptional ammonite preservation and historical fossil significance.

Hildoceras bifrons is named after St. Hilda of Whitby, and is characterised by its involute shell, fine ribbing, and a pronounced keel. These ammonites were fast-swimming, predatory marine cephalopods that thrived in the ancient Jurassic seas. Their presence in the fossil record offers insights into biostratigraphy and Jurassic marine ecosystems.

The geology of the region—specifically the Jet Rock and Grey Shales of the Whitby Mudstone Formation—provides perfect conditions for fossil preservation. The dark, finely laminated shales formed in anoxic seafloor environments, allowing exquisite fossilisation of marine life with minimal disturbance from scavengers or currents.

This fossil is part of the Alice Purnell Collection, a highly regarded British collection known for exceptional fossil quality and historical importance. It has been expertly cleaned and prepared to display the natural structure and aesthetics of this iconic ammonite.

Item Details:

  • Species: Hildoceras bifrons
  • Fossil Type: Ammonite
  • Geological Formation: Whitby Mudstone Formation (Jet Rock / Grey Shales)
  • Geological Age: Lower Jurassic (Toarcian Stage, ~180 million years ago)
  • Stratigraphy: Upper Lias
  • Location: Runswick Bay, Whitby, North Yorkshire, UK
  • Collection: Alice Purnell Collection
  • Condition: Natural fossil with professional preparation
  • Scale Reference: Please refer to photo with 1cm cube/rule
  • Certificate of Authenticity: Included with purchase

ACTUAL AS SEEN:

The image shows the exact specimen you will receive. It has been carefully hand-selected and photographed to ensure you get a faithful visual representation. While we aim for accurate measurements, irregular fossil shapes may cause slight variation. Lighting and monitor differences may affect colour slightly. Once this item is sold, the listing will be updated with a new fossil and fresh imagery.

100% Genuine Jurassic Ammonite – Professionally Prepared – Certificate of Authenticity Included – From the World-Famous Whitby Coastline

Additional information

Era

Jurassic
Origin

United Kingdom

Jurassic Information

The Jurassic Period (201–145 million years ago) was the golden age of dinosaurs, with iconic species like Brachiosaurus, Stegosaurus, and Allosaurus dominating the land. It was a time of warm, humid climates, with high sea levels that created vast shallow seas, supporting abundant marine reptiles, ammonites, and early coral reefs. The first birds, such as Archaeopteryx, evolved from small theropod dinosaurs, while early mammals remained small and nocturnal. Lush forests of cycads, conifers, and ferns covered the land, providing food for giant herbivores. The breakup of the supercontinent Pangaea accelerated, shaping Earth's geography and setting the stage for the diverse ecosystems of the Cretaceous.

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