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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Rare kosmoceras jasoni ammonite fossil block – jurassic, callovian, oxford clay, yaxley, peterborough, uk

£84.00

A stunning and well-preserved Kosmoceras jasoni fossil ammonite block from the Jurassic period, showcasing intricate suture patterns and exceptional detail. This fossil originates from the Upper Oxford Clay, Callovian stage, found in the historically significant Yaxley, Peterborough, UK.

Species: Kosmoceras jasoni

Age: Middle Jurassic, Callovian (~166 million years old)

Formation: Upper Oxford Clay

Location: Yaxley, Peterborough, UK

Size: See scale in the provided photo

Key Features:

Beautiful ammonite specimen with distinct ribbing and suture details

Fossil block with multiple ammonites, making it a unique display piece

100% Genuine Fossil, carefully selected for quality

Comes with a Certificate of Authenticity

Ideal for collectors, museums, or educational purposes

Provenance:

This fossil is part of the prestigious Alice Purnell Collection, one of the largest and most respected ammonite collections in the world. A rare and highly collectible specimen, representing a key period in Earth’s history.

What You Receive:

  • The exact Kosmoceras jasoni ammonite fossil block shown in the photos
  • A Certificate of Authenticity guaranteeing its legitimacy
  • Secure, protective packaging for safe delivery

Why Buy From Us?

All of our fossils are 100% genuine, ethically sourced, and fully authenticated. We take pride in offering museum-grade specimens with detailed documentation.

Perfect for Fossil Enthusiasts!

This rare ammonite fossil block makes a great addition to any collection and a unique gift for fossil collectors, paleontology lovers, or history enthusiasts.

Limited Availability – Don’t Miss Out!

Kosmoceras fossils from Oxford Clay are highly sought after, making this an exceptional investment for serious collectors.

Order Now – Fast, Secure Shipping Worldwide!

(Actual as seen)

Out of stock

SKU: AF0234 Category:

Description

A stunning and well-preserved Kosmoceras jasoni fossil ammonite block from the Jurassic period, showcasing intricate suture patterns and exceptional detail. This fossil originates from the Upper Oxford Clay, Callovian stage, found in the historically significant Yaxley, Peterborough, UK.

Species: Kosmoceras jasoni

Age: Middle Jurassic, Callovian (~166 million years old)

Formation: Upper Oxford Clay

Location: Yaxley, Peterborough, UK

Size: See scale in the provided photo

Key Features:

Beautiful ammonite specimen with distinct ribbing and suture details

Fossil block with multiple ammonites, making it a unique display piece

100% Genuine Fossil, carefully selected for quality

Comes with a Certificate of Authenticity

Ideal for collectors, museums, or educational purposes

Provenance:

This fossil is part of the prestigious Alice Purnell Collection, one of the largest and most respected ammonite collections in the world. A rare and highly collectible specimen, representing a key period in Earth’s history.

What You Receive:

  • The exact Kosmoceras jasoni ammonite fossil block shown in the photos
  • A Certificate of Authenticity guaranteeing its legitimacy
  • Secure, protective packaging for safe delivery

Why Buy From Us?

All of our fossils are 100% genuine, ethically sourced, and fully authenticated. We take pride in offering museum-grade specimens with detailed documentation.

Perfect for Fossil Enthusiasts!

This rare ammonite fossil block makes a great addition to any collection and a unique gift for fossil collectors, paleontology lovers, or history enthusiasts.

Limited Availability – Don’t Miss Out!

Kosmoceras fossils from Oxford Clay are highly sought after, making this an exceptional investment for serious collectors.

Order Now – Fast, Secure Shipping Worldwide!

Additional information

Weight 0.1 g
Dimensions 10 × 10 × 10 cm
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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