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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Dactylioceras tenuicostatum Ammonite Fossil – Upper Lias, Lower Jurassic – Whitby, Yorkshire, UK – Alice Purnell Collection
Dactylioceras tenuicostatum Ammonite Fossil – Upper Lias, Lower Jurassic – Whitby, Yorkshire, UK – Alice Purnell Collection - Image 2
Dactylioceras tenuicostatum Ammonite Fossil – Upper Lias, Lower Jurassic – Whitby, Yorkshire, UK – Alice Purnell Collection - Image 3

Dactylioceras tenuicostatum Ammonite Fossil – Upper Lias, Lower Jurassic – Whitby, Yorkshire, UK – Alice Purnell Collection

£72.00

This listing features an authentic fossil of Dactylioceras tenuicostatum, one of the most iconic ammonites from the famous fossil-bearing cliffs of Whitby, North Yorkshire, UK. Dating back to the Lower Jurassic period, approximately 180 million years ago, this specimen comes from the Upper Lias section of the Whitby Mudstone Formation, a globally significant geological unit known for producing exceptionally well-preserved marine fossils.

Dactylioceras tenuicostatum is recognised for its delicate, closely spaced ribs and coiled, disc-like shell — features that helped it navigate the ancient Jurassic seas. Ammonites like this one were fast-swimming marine molluscs belonging to the class Cephalopoda, making them close relatives of modern-day squid and octopuses. Their fossilised remains are not only stunning to look at but are also highly valuable to science, helping to date rock layers and reconstruct ancient marine ecosystems.

This particular fossil is part of the Alice Purnell Collection, a carefully curated assemblage of historically and scientifically significant fossils. It was discovered by our own expert team, Alister and Alison, and cleaned, prepped, and treated by Alison to ensure its preservation and display quality.

Whether you’re a seasoned fossil collector, an educator, or someone fascinated by the history of life on Earth, this specimen is a genuine piece of Britain’s deep geological and natural heritage.

Item Details:

  • Species: Dactylioceras tenuicostatum
  • Fossil Type: Ammonite (Cephalopod)
  • Geological Period: Lower Jurassic
  • Stratigraphy: Upper Lias
  • Formation: Whitby Mudstone Formation
  • Location Found: Whitby, North Yorkshire, UK
  • Discovery Date & Team: Collected by Alister & Alison
  • Prepared by: Alison
  • Collection: Alice Purnell Collection
  • Scale Reference: 1cm cube shown in photo
  • Certificate of Authenticity: Included

ACTUAL AS SEEN:

The photograph shows the exact specimen you will receive. Each fossil is hand-selected, measured, and professionally photographed. While we aim to capture true-to-life colours and scale, slight variations may occur due to monitor settings or lighting. Once sold, this listing will be updated with a new specimen and set of images.

100% Genuine Fossil – Professionally Prepared – Certificate of Authenticity Included – Historic British Fossil from the Jurassic Coastline of Yorkshire

(Actual as seen)

Out of stock

SKU: UF3131 Category:

Description

This listing features an authentic fossil of Dactylioceras tenuicostatum, one of the most iconic ammonites from the famous fossil-bearing cliffs of Whitby, North Yorkshire, UK. Dating back to the Lower Jurassic period, approximately 180 million years ago, this specimen comes from the Upper Lias section of the Whitby Mudstone Formation, a globally significant geological unit known for producing exceptionally well-preserved marine fossils.

Dactylioceras tenuicostatum is recognised for its delicate, closely spaced ribs and coiled, disc-like shell — features that helped it navigate the ancient Jurassic seas. Ammonites like this one were fast-swimming marine molluscs belonging to the class Cephalopoda, making them close relatives of modern-day squid and octopuses. Their fossilised remains are not only stunning to look at but are also highly valuable to science, helping to date rock layers and reconstruct ancient marine ecosystems.

This particular fossil is part of the Alice Purnell Collection, a carefully curated assemblage of historically and scientifically significant fossils. It was discovered by our own expert team, Alister and Alison, and cleaned, prepped, and treated by Alison to ensure its preservation and display quality.

Whether you’re a seasoned fossil collector, an educator, or someone fascinated by the history of life on Earth, this specimen is a genuine piece of Britain’s deep geological and natural heritage.

Item Details:

  • Species: Dactylioceras tenuicostatum
  • Fossil Type: Ammonite (Cephalopod)
  • Geological Period: Lower Jurassic
  • Stratigraphy: Upper Lias
  • Formation: Whitby Mudstone Formation
  • Location Found: Whitby, North Yorkshire, UK
  • Discovery Date & Team: Collected by Alister & Alison
  • Prepared by: Alison
  • Collection: Alice Purnell Collection
  • Scale Reference: 1cm cube shown in photo
  • Certificate of Authenticity: Included

ACTUAL AS SEEN:

The photograph shows the exact specimen you will receive. Each fossil is hand-selected, measured, and professionally photographed. While we aim to capture true-to-life colours and scale, slight variations may occur due to monitor settings or lighting. Once sold, this listing will be updated with a new specimen and set of images.

100% Genuine Fossil – Professionally Prepared – Certificate of Authenticity Included – Historic British Fossil from the Jurassic Coastline of Yorkshire

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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