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 Ammonite Fossil | Toarcian, Jurassic | Ravenscar Yorkshire UK | Alice Purnell Collection | Genuine with Certificate
Hildoceras bifrons Ammonite Fossil | Toarcian, Jurassic | Ravenscar Yorkshire UK | Alice Purnell Collection | Genuine with Certificate - Image 2

Hildoceras bifrons Ammonite Fossil | Toarcian, Jurassic | Ravenscar Yorkshire UK | Alice Purnell Collection | Genuine with Certificate

Original price was: £36.00.Current price is: £32.40.

Fossil Type & Species:

This listing features a genuine ammonite fossil of Hildoceras bifrons, an iconic and widely recognised species from the Toarcian Stage of the Lower Jurassic Period. This beautifully preserved specimen comes from the Ravenscar locality in North Yorkshire, United Kingdom, and is part of the highly respected Alice Purnell Collection, which is known for its exceptional quality and scientific value.

Geological Formation & Insight:

Hildoceras bifrons belongs to the family Hildoceratidae, a group of strongly ribbed, evolute ammonites with well-defined whorl structures. This species is a key biostratigraphic index fossil, defining the bifrons Zone of the Toarcian and making it crucial for dating Early Jurassic marine deposits.

This fossil was collected from the Whitby Mudstone Formation, deposited approximately 182–180 million years ago during a time when much of the UK was submerged under a shallow, low-oxygen marine environment. These conditions resulted in fine-grained mudstones and shales, which are known for exceptional fossil preservation — especially ammonites, belemnites, and marine reptiles.

Ravenscar, located on the North Yorkshire Jurassic Coast, is a classic collecting site that continues to yield ammonites with incredible detail, including suture lines, ribbing, and often near-complete whorls. Hildoceras bifrons is one of the most frequently sought-after species from this site due to its visual appeal and geological importance.

Item Specifics:

  • Fossil Type: Ammonite
  • Species: Hildoceras bifrons
  • Geological Age: Toarcian Stage, Lower Jurassic (~182–180 million years ago)
  • Formation: Whitby Mudstone Formation
  • Locality: Ravenscar, North Yorkshire, United Kingdom
  • Provenance: From the Alice Purnell Collection
  • Preservation: Excellent – fine ribbing, strong whorl detail, and natural matrix
  • Colour: Natural grey-brown matrix with darker fossil tone
  • Size: Please refer to the scale cube in the photo (1cm squares)
  • Condition: 100% natural, unrestored specimen
  • Specimen: You will receive the exact fossil shown in the photographs

Authenticity Guarantee:

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity. This ammonite has been carefully curated from the Alice Purnell Collection, offering verified provenance and exceptional quality.

Shipping & Packaging:

Your fossil will be securely packaged and shipped with tracking. A unique and highly collectible item — perfect for fossil collectors, natural history enthusiasts, educators, or as a one-of-a-kind gift.

Thank you for visiting our shop — explore more authentic fossils, minerals, and crystals in our full collection!

(Actual as seen)

Only 1 left in stock

SKU: AF2073 Category:

Description

Fossil Type & Species:

This listing features a genuine ammonite fossil of Hildoceras bifrons, an iconic and widely recognised species from the Toarcian Stage of the Lower Jurassic Period. This beautifully preserved specimen comes from the Ravenscar locality in North Yorkshire, United Kingdom, and is part of the highly respected Alice Purnell Collection, which is known for its exceptional quality and scientific value.

Geological Formation & Insight:

Hildoceras bifrons belongs to the family Hildoceratidae, a group of strongly ribbed, evolute ammonites with well-defined whorl structures. This species is a key biostratigraphic index fossil, defining the bifrons Zone of the Toarcian and making it crucial for dating Early Jurassic marine deposits.

This fossil was collected from the Whitby Mudstone Formation, deposited approximately 182–180 million years ago during a time when much of the UK was submerged under a shallow, low-oxygen marine environment. These conditions resulted in fine-grained mudstones and shales, which are known for exceptional fossil preservation — especially ammonites, belemnites, and marine reptiles.

Ravenscar, located on the North Yorkshire Jurassic Coast, is a classic collecting site that continues to yield ammonites with incredible detail, including suture lines, ribbing, and often near-complete whorls. Hildoceras bifrons is one of the most frequently sought-after species from this site due to its visual appeal and geological importance.

Item Specifics:

  • Fossil Type: Ammonite
  • Species: Hildoceras bifrons
  • Geological Age: Toarcian Stage, Lower Jurassic (~182–180 million years ago)
  • Formation: Whitby Mudstone Formation
  • Locality: Ravenscar, North Yorkshire, United Kingdom
  • Provenance: From the Alice Purnell Collection
  • Preservation: Excellent – fine ribbing, strong whorl detail, and natural matrix
  • Colour: Natural grey-brown matrix with darker fossil tone
  • Size: Please refer to the scale cube in the photo (1cm squares)
  • Condition: 100% natural, unrestored specimen
  • Specimen: You will receive the exact fossil shown in the photographs

Authenticity Guarantee:

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity. This ammonite has been carefully curated from the Alice Purnell Collection, offering verified provenance and exceptional quality.

Shipping & Packaging:

Your fossil will be securely packaged and shipped with tracking. A unique and highly collectible item — perfect for fossil collectors, natural history enthusiasts, educators, or as a one-of-a-kind gift.

Thank you for visiting our shop — explore more authentic fossils, minerals, and crystals in our full collection!

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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