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 and other fossil ammonites multi block – upper oxfordian, jurassic – ashton keynes, uk – coa
Rare: kosmoceras and other fossil ammonites multi block – upper oxfordian, jurassic – ashton keynes, uk – coa - Image 2
Rare: kosmoceras and other fossil ammonites multi block – upper oxfordian, jurassic – ashton keynes, uk – coa - Image 3
Rare: kosmoceras and other fossil ammonites multi block – upper oxfordian, jurassic – ashton keynes, uk – coa - Image 4

Rare: kosmoceras and other fossil ammonites multi block – upper oxfordian, jurassic – ashton keynes, uk – coa

Original price was: £180.00.Current price is: £144.00.

This is a genuine Kosmoceras fossil ammonite from the Upper Oxfordian stage of the Jurassic Period (~160 million years ago). It was discovered in Ashton Keynes, United Kingdom, an area well known for its Jurassic marine deposits.

Kosmoceras is a genus of ammonites that thrived in the late Jurassic seas, featuring a highly ornate, ribbed shell with distinctive tubercles (spines). These ammonites belonged to the Aspidoceratidae family, a group characterized by their robust shells and intricate suture patterns. Kosmoceras would have been an important predator in the ancient marine ecosystems, preying on small marine creatures with its powerful tentacles.

Geological Information:

  • Species: Kosmoceras sp.
  • Fossil Type: Ammonite
  • Formation: Oxford Clay
  • Age: Upper Oxfordian, Jurassic (~160 million years old)
  • Location: Ashton Keynes, United Kingdom
  • Depositional Environment: Warm, shallow seas of the Jurassic

Fossil Features:

✔ Authentic Kosmoceras ammonite fossil with well-preserved ornamentation

✔ From the Oxfordian stage of the Jurassic, a key period in ammonite evolution

✔ Sourced from Ashton Keynes, a famous fossil locality in the UK

✔ A beautiful specimen for collectors, educators, or display purposes

Additional Information:

All fossils are 100% genuine specimens and come with a Certificate of Authenticity. Scale Rule / Cube = 1cm – Please refer to the photos for accurate sizing.

This Kosmoceras fossil ammonite is a rare and scientifically significant specimen, offering a glimpse into the rich marine life of the Jurassic. Perfect for fossil collectors, educational purposes, or museum-quality displays!

(Actual as seen)

Only 1 left in stock

SKU: AF0212 Category:

Description

This is a genuine Kosmoceras fossil ammonite from the Upper Oxfordian stage of the Jurassic Period (~160 million years ago). It was discovered in Ashton Keynes, United Kingdom, an area well known for its Jurassic marine deposits.

Kosmoceras is a genus of ammonites that thrived in the late Jurassic seas, featuring a highly ornate, ribbed shell with distinctive tubercles (spines). These ammonites belonged to the Aspidoceratidae family, a group characterized by their robust shells and intricate suture patterns. Kosmoceras would have been an important predator in the ancient marine ecosystems, preying on small marine creatures with its powerful tentacles.

Geological Information:

  • Species: Kosmoceras sp.
  • Fossil Type: Ammonite
  • Formation: Oxford Clay
  • Age: Upper Oxfordian, Jurassic (~160 million years old)
  • Location: Ashton Keynes, United Kingdom
  • Depositional Environment: Warm, shallow seas of the Jurassic

Fossil Features:

✔ Authentic Kosmoceras ammonite fossil with well-preserved ornamentation

✔ From the Oxfordian stage of the Jurassic, a key period in ammonite evolution

✔ Sourced from Ashton Keynes, a famous fossil locality in the UK

✔ A beautiful specimen for collectors, educators, or display purposes

Additional Information:

All fossils are 100% genuine specimens and come with a Certificate of Authenticity. Scale Rule / Cube = 1cm – Please refer to the photos for accurate sizing.

This Kosmoceras fossil ammonite is a rare and scientifically significant specimen, offering a glimpse into the rich marine life of the Jurassic. Perfect for fossil collectors, educational purposes, or museum-quality displays!

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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