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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Tropidoceras golden pyrite ammonite fossil, lower jurassic, lyme regis, charmouth uk

£36.00

Rare Golden Pyrite Ammonite Fossil – Tropidoceras sp.

Lower Jurassic – Black Ven Marls – Charmouth, Lyme Regis, Dorset, UK

This exquisite fossil ammonite, identified as Tropidoceras, is beautifully preserved in a distinctive golden pyrite form, making it a stunning piece for any fossil enthusiast or collector.

Species Information: Tropidoceras was an ammonite genus that lived during the early Jurassic period, around 190 million years ago. This genus is particularly renowned for its elegantly ribbed and well-defined coils, with a distinctive ornamentation that makes each specimen uniquely attractive and desirable among collectors.

Geological Background: This specimen comes from the famous Black Ven Marls formation, located along the Jurassic Coast at Stonebarrow Cliff, Charmouth, near Lyme Regis in Dorset, UK. The Black Ven Marls are internationally famous for yielding exceptional ammonite fossils preserved in iron pyrite, popularly known as “fool’s gold.” These fossils form through a unique geological process called pyritisation, in which organic material is replaced by iron sulfide, creating a metallic gold appearance.

Detailed Geological Information:

  • Geological Formation: Black Ven Marls
  • Geological Age: Lower Jurassic (Lower Lias) – approximately 190 million years old
  • Location Found: Stonebarrow Cliff, Charmouth, Lyme Regis, Dorset, UK

Discovery and Preparation: Your specimen was carefully discovered by our expert fossil-hunting team members, Alister and Alison, on the 2nd of March, 2025. It has been meticulously cleaned, prepared, and preserved by Alison to bring out its natural beauty and intricate detail.

Authenticity Guarantee:

  • 100% Genuine Fossil Specimen
  • Includes a signed Certificate of Authenticity.
  • Scale cube = 1cm (Please see detailed photo for precise dimensions)
  • The photograph provided shows the exact fossil specimen you will receive, ensuring complete confidence in your purchase.

Provenance: This fossil is from the renowned Alice Purnell Collection, well-known among collectors for quality and authenticity.

Whether as a thoughtful gift, educational resource, or centerpiece for a fossil collection, this stunning Tropidoceras ammonite fossil from the famous Jurassic Coast of Dorset is an exceptional example of Earth’s ancient marine life.

(Actual as seen)

Out of stock

SKU: CF2897 Category:

Description

Rare Golden Pyrite Ammonite Fossil – Tropidoceras sp.

Lower Jurassic – Black Ven Marls – Charmouth, Lyme Regis, Dorset, UK

This exquisite fossil ammonite, identified as Tropidoceras, is beautifully preserved in a distinctive golden pyrite form, making it a stunning piece for any fossil enthusiast or collector.

Species Information: Tropidoceras was an ammonite genus that lived during the early Jurassic period, around 190 million years ago. This genus is particularly renowned for its elegantly ribbed and well-defined coils, with a distinctive ornamentation that makes each specimen uniquely attractive and desirable among collectors.

Geological Background: This specimen comes from the famous Black Ven Marls formation, located along the Jurassic Coast at Stonebarrow Cliff, Charmouth, near Lyme Regis in Dorset, UK. The Black Ven Marls are internationally famous for yielding exceptional ammonite fossils preserved in iron pyrite, popularly known as “fool’s gold.” These fossils form through a unique geological process called pyritisation, in which organic material is replaced by iron sulfide, creating a metallic gold appearance.

Detailed Geological Information:

  • Geological Formation: Black Ven Marls
  • Geological Age: Lower Jurassic (Lower Lias) – approximately 190 million years old
  • Location Found: Stonebarrow Cliff, Charmouth, Lyme Regis, Dorset, UK

Discovery and Preparation: Your specimen was carefully discovered by our expert fossil-hunting team members, Alister and Alison, on the 2nd of March, 2025. It has been meticulously cleaned, prepared, and preserved by Alison to bring out its natural beauty and intricate detail.

Authenticity Guarantee:

  • 100% Genuine Fossil Specimen
  • Includes a signed Certificate of Authenticity.
  • Scale cube = 1cm (Please see detailed photo for precise dimensions)
  • The photograph provided shows the exact fossil specimen you will receive, ensuring complete confidence in your purchase.

Provenance: This fossil is from the renowned Alice Purnell Collection, well-known among collectors for quality and authenticity.

Whether as a thoughtful gift, educational resource, or centerpiece for a fossil collection, this stunning Tropidoceras ammonite fossil from the famous Jurassic Coast of Dorset is an exceptional example of Earth’s ancient marine life.

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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