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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Asteroceras Calcite Ammonite Fossil - Black Ven Marls - Lower Jurassic - Lyme Regis UK - Genuine with Certificate
Asteroceras Calcite Ammonite Fossil - Black Ven Marls - Lower Jurassic - Lyme Regis UK - Genuine with Certificate - Image 2
Asteroceras Calcite Ammonite Fossil - Black Ven Marls - Lower Jurassic - Lyme Regis UK - Genuine with Certificate - Image 3
Asteroceras Calcite Ammonite Fossil - Black Ven Marls - Lower Jurassic - Lyme Regis UK - Genuine with Certificate - Image 4
Asteroceras Calcite Ammonite Fossil - Black Ven Marls - Lower Jurassic - Lyme Regis UK - Genuine with Certificate - Image 5

Asteroceras Calcite Ammonite Fossil – Black Ven Marls – Lower Jurassic – Lyme Regis UK – Genuine with Certificate

Original price was: £132.00.Current price is: £118.80.

A stunning and beautifully preserved Asteroceras calcite ammonite fossil, collected from the iconic Black Ven Marls of the Lower Lias, part of the world-famous Jurassic Coast at Stonebarrow Cliff, Charmouth, Lyme Regis, Dorset, UK.

This specimen was discovered on 26 April 2025 by our expert field team, Alister and Alison, and has been professionally cleaned, prepped and treated by Alison. A carefully selected and authenticated fossil, the image shown is of the actual specimen you will receive.

Asteroceras is an extinct genus of ammonite known for its broad, rounded whorls and strong ribbing. This example is notable for its calcite preservation, where original aragonite shell material has been replaced by crystalline calcite, offering an elegant shimmer and detail visibility.

The fossil is from the Sinemurian Stage of the Lower Jurassic, approximately 199–190 million years ago, and is a classic index fossil for this age. The depositional environment of the Black Ven Marls was a marine shelf basin, with fine-grained sediments ideal for preserving marine fauna.

 

Geological & Taxonomic Information:

  • Species: Asteroceras sp.
  • Fossil Type: Calcite-preserved ammonite
  • Geological Period: Jurassic
  • Stage: Sinemurian (Lower Jurassic)
  • Formation: Black Ven Marls, Lower Lias
  • Location: Stonebarrow Cliff, Charmouth, Lyme Regis, Dorset, UK
  • Depositional Environment: Offshore marine shelf (low-energy environment)
  • Family: Arietitidae
  • Superfamily: Psiloceratoidea
  • Order: Ammonitida

 

What You Receive:

  • The exact fossil specimen pictured
  • A Certificate of Authenticity confirming its 100% genuine origin
  • Secure packaging with expert handling for safe delivery

Ideal for collectors, educators, or anyone inspired by the fossils of the Jurassic Coast.

 

Note:

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Scale cube = 1cm. Please see photo for full dimensions.

 

(Actual as seen)

Only 1 left in stock

SKU: CF3191 Category:

Description

A stunning and beautifully preserved Asteroceras calcite ammonite fossil, collected from the iconic Black Ven Marls of the Lower Lias, part of the world-famous Jurassic Coast at Stonebarrow Cliff, Charmouth, Lyme Regis, Dorset, UK.

This specimen was discovered on 26 April 2025 by our expert field team, Alister and Alison, and has been professionally cleaned, prepped and treated by Alison. A carefully selected and authenticated fossil, the image shown is of the actual specimen you will receive.

Asteroceras is an extinct genus of ammonite known for its broad, rounded whorls and strong ribbing. This example is notable for its calcite preservation, where original aragonite shell material has been replaced by crystalline calcite, offering an elegant shimmer and detail visibility.

The fossil is from the Sinemurian Stage of the Lower Jurassic, approximately 199–190 million years ago, and is a classic index fossil for this age. The depositional environment of the Black Ven Marls was a marine shelf basin, with fine-grained sediments ideal for preserving marine fauna.

 

Geological & Taxonomic Information:

  • Species: Asteroceras sp.
  • Fossil Type: Calcite-preserved ammonite
  • Geological Period: Jurassic
  • Stage: Sinemurian (Lower Jurassic)
  • Formation: Black Ven Marls, Lower Lias
  • Location: Stonebarrow Cliff, Charmouth, Lyme Regis, Dorset, UK
  • Depositional Environment: Offshore marine shelf (low-energy environment)
  • Family: Arietitidae
  • Superfamily: Psiloceratoidea
  • Order: Ammonitida

 

What You Receive:

  • The exact fossil specimen pictured
  • A Certificate of Authenticity confirming its 100% genuine origin
  • Secure packaging with expert handling for safe delivery

Ideal for collectors, educators, or anyone inspired by the fossils of the Jurassic Coast.

 

Note:

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Scale cube = 1cm. Please see photo for full dimensions.

 

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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