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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Stephanoceras umbilicum Fossil Ammonite – Lower Bajocian, Jurassic – Calvados, France – Alice Purnell Collection
Stephanoceras umbilicum Fossil Ammonite – Lower Bajocian, Jurassic – Calvados, France – Alice Purnell Collection - Image 2

Stephanoceras umbilicum Fossil Ammonite – Lower Bajocian, Jurassic – Calvados, France – Alice Purnell Collection

Original price was: £46.80.Current price is: £39.60.

This listing offers a beautifully preserved and rare Stephanoceras umbilicum fossil ammonite from the Lower Bajocian Stage of the Middle Jurassic Period, approximately 170 million years ago. This particular specimen originates from Calvados, Normandy, France, and is part of the renowned Alice Purnell Collection.

Stephanoceras umbilicum belongs to the family Stephanoceratidae, a group of ammonites known for their ornate and highly ribbed shells with prominent tubercles. These ammonites were fast-moving, nektonic carnivores that thrived in the shallow marine environments of the Jurassic seas.

The Lower Bajocian Stage is a subdivision of the Middle Jurassic, characterized by diverse and well-preserved marine fossil assemblages. In the region of Calvados, the sedimentary rocks consist predominantly of limestone and marl, which provided excellent conditions for the fossilisation of ammonites and other marine organisms.

This specimen of Stephanoceras umbilicum displays classic features of the species including a wide umbilicus, well-defined ribbing, and a coiled spiral structure that showcases the natural geometry of these extinct marine molluscs. A must-have for fossil enthusiasts, collectors, or educators seeking a genuine example of Jurassic marine life.

 

Item Details:

  • Specimen: Stephanoceras umbilicum
  • Fossil Type: Ammonite
  • Age: Lower Bajocian, Middle Jurassic (~170 million years ago)
  • Geological Context: Jurassic marine deposits
  • Location Found: Calvados, France
  • Provenance: Alice Purnell Collection
  • Certificate of Authenticity: Included
  • Scale Reference: Scale rule squares/cube = 1cm (see photo for full sizing)

 

ACTUAL AS SEEN: You will receive the exact specimen shown in the photographs. This fossil has been carefully chosen, hand-selected, and professionally photographed. While dimensions are recorded as accurately as possible, irregularities in shape may lead to minor variations. Colours may appear different depending on lighting or monitor/device settings.

Once this specimen is sold, the listing will be updated with a new item, photograph, and measurements. We recommend saving or screenshotting your purchase image for your records. We maintain an archive of all listing images for verification.

 

Add a museum-quality ammonite to your fossil collection with this stunning Stephanoceras umbilicum specimen from the Jurassic seas of Calvados.

(Actual as seen)

Only 1 left in stock

SKU: AF1142 Category:

Description

This listing offers a beautifully preserved and rare Stephanoceras umbilicum fossil ammonite from the Lower Bajocian Stage of the Middle Jurassic Period, approximately 170 million years ago. This particular specimen originates from Calvados, Normandy, France, and is part of the renowned Alice Purnell Collection.

Stephanoceras umbilicum belongs to the family Stephanoceratidae, a group of ammonites known for their ornate and highly ribbed shells with prominent tubercles. These ammonites were fast-moving, nektonic carnivores that thrived in the shallow marine environments of the Jurassic seas.

The Lower Bajocian Stage is a subdivision of the Middle Jurassic, characterized by diverse and well-preserved marine fossil assemblages. In the region of Calvados, the sedimentary rocks consist predominantly of limestone and marl, which provided excellent conditions for the fossilisation of ammonites and other marine organisms.

This specimen of Stephanoceras umbilicum displays classic features of the species including a wide umbilicus, well-defined ribbing, and a coiled spiral structure that showcases the natural geometry of these extinct marine molluscs. A must-have for fossil enthusiasts, collectors, or educators seeking a genuine example of Jurassic marine life.

Item Details:

  • Specimen: Stephanoceras umbilicum
  • Fossil Type: Ammonite
  • Age: Lower Bajocian, Middle Jurassic (~170 million years ago)
  • Geological Context: Jurassic marine deposits
  • Location Found: Calvados, France
  • Provenance: Alice Purnell Collection
  • Certificate of Authenticity: Included
  • Scale Reference: Scale rule squares/cube = 1cm (see photo for full sizing)

ACTUAL AS SEEN: You will receive the exact specimen shown in the photographs. This fossil has been carefully chosen, hand-selected, and professionally photographed. While dimensions are recorded as accurately as possible, irregularities in shape may lead to minor variations. Colours may appear different depending on lighting or monitor/device settings.

Once this specimen is sold, the listing will be updated with a new item, photograph, and measurements. We recommend saving or screenshotting your purchase image for your records. We maintain an archive of all listing images for verification.

Add a museum-quality ammonite to your fossil collection with this stunning Stephanoceras umbilicum specimen from the Jurassic seas of Calvados.

Additional information

Era

Jurassic
Origin

France

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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