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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Grossouvria subtilis Fossil Ammonite, Callovian, Jurassic: Calvados, France – 100% Genuine with Certificate of Authenticity

Original price was: £14.40.Current price is: £12.96.

This Grossouvria subtilis fossil ammonite is a beautiful specimen from the Callovian Stage of the Jurassic Period, discovered in the Calvados region of France. The Callovian, part of the Middle Jurassic, is known for its marine life diversity, including ammonites like Grossouvria subtilis. This ammonite’s clear preservation and well-defined features make it a perfect addition to any collection of prehistoric marine fossils.

Geological Information:

  • Geological Stage: Callovian, Jurassic (Approximately 166 to 161 million years ago)
  • Depositional Environment: The Callovian period was characterized by warm, shallow seas that covered much of Europe, including the area now known as Calvados, France. These seas were home to a rich variety of marine life, including ammonites like Grossouvria subtilis. The fossil was preserved in the sediments of these ancient seas, offering a detailed snapshot of Jurassic marine ecosystems.
  • Biozone: This fossil comes from the Callovian biozone, known for its diversity of ammonites, many of which evolved into distinct species and contributed significantly to marine ecosystems of the time.

Fossil Features:

  • Family: Desmoceratidae
  • Super Family: Desmoceratoidea
  • Order: Ammonitida
  • Morphology: The Grossouvria subtilis ammonite is characterized by its distinctly ribbed, evolute shell, which displays a pronounced, finely detailed surface texture. The whorl of this ammonite is well-defined, and the ribs are strongly visible, contributing to the characteristic look of the species. The shell is typically compressed with a rounded, smooth curvature, ideal for protection in the marine environment.

Notable Details:

  • This fossil is 100% GENUINE and comes with a Certificate of Authenticity, assuring its value and legitimacy.
  • The specimen has been carefully selected for its unique features and high-quality preservation. The photograph provided shows the actual specimen you will receive, ensuring you know exactly what you are purchasing.
  • Scale Rule: The scale rule squares/cube shown in the photo represents 1cm, providing an accurate measure of the fossil’s size. Full sizing details are available in the photograph.

Condition:

This Grossouvria subtilis Fossil Ammonite is in excellent condition, displaying clearly defined ribs and smooth shell curvature. It has been carefully cleaned and treated for display, making it an ideal specimen for fossil collectors or anyone interested in Jurassic ammonites.

(Actual as seen)

Only 1 left in stock

SKU: SF0783 Category:

Description

This Grossouvria subtilis fossil ammonite is a beautiful specimen from the Callovian Stage of the Jurassic Period, discovered in the Calvados region of France. The Callovian, part of the Middle Jurassic, is known for its marine life diversity, including ammonites like Grossouvria subtilis. This ammonite’s clear preservation and well-defined features make it a perfect addition to any collection of prehistoric marine fossils.

Geological Information:

  • Geological Stage: Callovian, Jurassic (Approximately 166 to 161 million years ago)
  • Depositional Environment: The Callovian period was characterized by warm, shallow seas that covered much of Europe, including the area now known as Calvados, France. These seas were home to a rich variety of marine life, including ammonites like Grossouvria subtilis. The fossil was preserved in the sediments of these ancient seas, offering a detailed snapshot of Jurassic marine ecosystems.
  • Biozone: This fossil comes from the Callovian biozone, known for its diversity of ammonites, many of which evolved into distinct species and contributed significantly to marine ecosystems of the time.

Fossil Features:

  • Family: Desmoceratidae
  • Super Family: Desmoceratoidea
  • Order: Ammonitida
  • Morphology: The Grossouvria subtilis ammonite is characterized by its distinctly ribbed, evolute shell, which displays a pronounced, finely detailed surface texture. The whorl of this ammonite is well-defined, and the ribs are strongly visible, contributing to the characteristic look of the species. The shell is typically compressed with a rounded, smooth curvature, ideal for protection in the marine environment.

Notable Details:

  • This fossil is 100% GENUINE and comes with a Certificate of Authenticity, assuring its value and legitimacy.
  • The specimen has been carefully selected for its unique features and high-quality preservation. The photograph provided shows the actual specimen you will receive, ensuring you know exactly what you are purchasing.
  • Scale Rule: The scale rule squares/cube shown in the photo represents 1cm, providing an accurate measure of the fossil’s size. Full sizing details are available in the photograph.

Condition:

This Grossouvria subtilis Fossil Ammonite is in excellent condition, displaying clearly defined ribs and smooth shell curvature. It has been carefully cleaned and treated for display, making it an ideal specimen for fossil collectors or anyone interested in Jurassic ammonites.

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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