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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5.5" Amaltheus margaritatus Fossil Ammonite – Upper Pliensbachian, Jurassic, Eype, Dorset, UK – COA – Alice Purnell Collection
5.5" Amaltheus margaritatus Fossil Ammonite – Upper Pliensbachian, Jurassic, Eype, Dorset, UK – COA – Alice Purnell Collection - Image 2

5.5″ Amaltheus margaritatus Fossil Ammonite – Upper Pliensbachian, Jurassic, Eype, Dorset, UK – COA – Alice Purnell Collection

£120.00

This impressive 5.5″ fossil ammonite is from the species Amaltheus margaritatus, a classic ammonite from the Upper Pliensbachian Stage of the Early Jurassic, approximately 190 million years old. It was discovered along the famous fossil-rich coastline at Eype, Dorset, United Kingdom, part of England’s iconic Jurassic Coast World Heritage Site.

Amaltheus is a genus of fast-moving nektonic (free-swimming) marine cephalopods, known for their beautifully ribbed, planispiral shells with a distinctive keel and fine growth lines. Amaltheus margaritatus, the type species of its genus, is especially renowned for its strong ribbing and pearly shell luster (hence the name margaritatus, Latin for “pearly”). These ammonites are important index fossils, helping to date and correlate rock layers from the Early Jurassic.

The Pliensbachian Stage is part of the Lower Jurassic and is noted for its widespread marine sedimentary deposits. The coast around Eype and Charmouth is world-famous for yielding exceptionally well-preserved ammonites, often found within shale and limestone layers of the Belemnite Marl and Bridport Sand formations.

This exceptional fossil specimen was part of the Alice Purnell Collection—a notable private collection featuring museum-grade fossil specimens sourced from classic localities across the UK. This piece has been professionally cleaned, stabilised, and prepared to show off its striking natural detail and curvature.

Item Details:

  • Species: Amaltheus margaritatus
  • Type: Fossil Ammonite
  • Size: 5.5 inches (approx.)
  • Age: Upper Pliensbachian Stage, Early Jurassic (~190 million years ago)
  • Geological Formation: Belemnite Marl, Jurassic Coast
  • Locality: Eype, Dorset, United Kingdom
  • Collection: Alice Purnell Collection
  • Scale Reference: Scale rule/cube = 1cm (please refer to photos)
  • Certificate of Authenticity: Included with purchase

ACTUAL AS SEEN:

The image shows the exact specimen you will receive. This ammonite has been hand-selected and photographed for accuracy. While every effort is made to reflect true colour and scale, variations may occur due to monitor settings and lighting conditions. Once this item is sold, the listing will be updated with a new similar specimen and new photos.

100% Genuine Fossil – Professionally Prepared – Certificate of Authenticity Included

(Actual as seen)

Out of stock

SKU: AF2001 Category:

Description

This impressive 5.5″ fossil ammonite is from the species Amaltheus margaritatus, a classic ammonite from the Upper Pliensbachian Stage of the Early Jurassic, approximately 190 million years old. It was discovered along the famous fossil-rich coastline at Eype, Dorset, United Kingdom, part of England’s iconic Jurassic Coast World Heritage Site.

Amaltheus is a genus of fast-moving nektonic (free-swimming) marine cephalopods, known for their beautifully ribbed, planispiral shells with a distinctive keel and fine growth lines. Amaltheus margaritatus, the type species of its genus, is especially renowned for its strong ribbing and pearly shell luster (hence the name margaritatus, Latin for “pearly”). These ammonites are important index fossils, helping to date and correlate rock layers from the Early Jurassic.

The Pliensbachian Stage is part of the Lower Jurassic and is noted for its widespread marine sedimentary deposits. The coast around Eype and Charmouth is world-famous for yielding exceptionally well-preserved ammonites, often found within shale and limestone layers of the Belemnite Marl and Bridport Sand formations.

This exceptional fossil specimen was part of the Alice Purnell Collection—a notable private collection featuring museum-grade fossil specimens sourced from classic localities across the UK. This piece has been professionally cleaned, stabilised, and prepared to show off its striking natural detail and curvature.

Item Details:

  • Species: Amaltheus margaritatus
  • Type: Fossil Ammonite
  • Size: 5.5 inches (approx.)
  • Age: Upper Pliensbachian Stage, Early Jurassic (~190 million years ago)
  • Geological Formation: Belemnite Marl, Jurassic Coast
  • Locality: Eype, Dorset, United Kingdom
  • Collection: Alice Purnell Collection
  • Scale Reference: Scale rule/cube = 1cm (please refer to photos)
  • Certificate of Authenticity: Included with purchase

ACTUAL AS SEEN:

The image shows the exact specimen you will receive. This ammonite has been hand-selected and photographed for accuracy. While every effort is made to reflect true colour and scale, variations may occur due to monitor settings and lighting conditions. Once this item is sold, the listing will be updated with a new similar specimen and new photos.

100% Genuine Fossil – Professionally Prepared – Certificate of Authenticity Included

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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