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Quenstedtoceras Fossil Ammonite Jurassic Upper Callovian France Genuine Collectors Specimen

Quenstedtoceras Fossil Ammonite Jurassic Upper Callovian France Genuine Collectors Specimen

£9.00

Authentic Quenstedtoceras Fossil Ammonite from France

This listing features a remarkable Quenstedtoceras fossil ammonite, preserved from the Upper Callovian Stage of the Jurassic, collected in France. This specimen represents a genuine fragment of Earth’s deep past, capturing the story of ammonites that thrived over 160 million years ago in the warm Jurassic seas. Every fossil we offer is carefully selected for its scientific and aesthetic qualities and comes with a Certificate of Authenticity, confirming it as a genuine specimen. The exact fossil shown in the photos is the piece you will receive.

Geological Age and Locality

The Upper Callovian Stage is part of the Middle Jurassic, dating to approximately 164 to 161 million years ago. The Callovian is particularly well known for its abundance of ammonites, which evolved rapidly and spread widely across marine environments. This specimen originates from France, a country renowned for its exceptional Jurassic fossil deposits, particularly in the Paris Basin and Normandy regions. These strata represent shallow marine environments where ammonites thrived, along with belemnites, marine reptiles, and bivalves.

Scientific Classification

  • Genus: Quenstedtoceras
  • Family: Cardioceratidae
  • Superfamily: Stephanoceratoidea
  • Order: Ammonitida
  • Class: Cephalopoda
  • Age: Upper Callovian, Middle Jurassic
  • Locality: France

Morphological Features

Quenstedtoceras ammonites are instantly recognisable by their elegant ribbed shells and distinct ornamentation. Characteristic features include:

  • Strong, evenly spaced ribs crossing the whorls, often bifurcating near the margin.
  • A moderately involute shell with visible inner whorls.
  • A narrow to moderately wide umbilicus, providing depth to the coiling pattern.
  • A ventral keel that accentuates the hydrodynamic form of the shell.
  • These traits highlight the adaptability of ammonites to their open marine environment, where streamlined shapes would have aided buoyancy control and mobility in search of prey.

Biostratigraphic Importance

Ammonites of the genus Quenstedtoceras serve as important index fossils for the Callovian. Their rapid evolutionary turnover and widespread distribution make them invaluable in correlating Jurassic rock sequences across Europe. Quenstedtoceras is particularly tied to the Quenstedtoceras lamberti biozone, a key stratigraphic marker within the Upper Callovian. For geologists, these fossils provide essential evidence in reconstructing the sequence of Jurassic marine environments, while for collectors, they represent scientifically significant specimens from a crucial stage in ammonite evolution.

Depositional Environment

During the Callovian, France lay beneath epicontinental seas that were shallow, warm, and teeming with life. Ammonites such as Quenstedtoceras were active predators, preying on smaller marine organisms. Their shells, after death, would sink to the sea floor where fine sediments buried and preserved them. Over millions of years, mineralisation turned these shells into the fossils we find today, capturing exquisite detail of ribbing and shell form. The preservation of this specimen offers an invaluable insight into marine ecosystems of the Jurassic.

Collector’s Value and Display Quality

This Quenstedtoceras fossil ammonite is an excellent addition to any fossil collection, combining scientific importance with natural beauty. Its striking ribbing and historical significance make it suitable for collectors, educators, or as a unique geological display piece. As a genuine fossil from the Upper Callovian of France, it embodies both the natural artistry of ancient cephalopods and the deep geological history of Europe.

Item Details

  • Fossil Type: Ammonite – Quenstedtoceras
  • Age: Upper Callovian, Jurassic (approx. 164–161 million years old)
  • Location: France
  • Notable Features: Ribbed shell structure, keel, classic Jurassic morphology
  • Scale: Rule squares/cube = 1 cm (see photo for full sizing)
  • Certificate: Includes a Certificate of Authenticity
  • Specimen Shown: You will receive the exact fossil pictured

An outstanding opportunity to own a scientifically valuable and visually striking Quenstedtoceras fossil ammonite from the Jurassic seas of France.

(Actual as seen)

Only 1 left in stock

SKU: SF0838 Category:

Description

Authentic Quenstedtoceras Fossil Ammonite from France

This listing features a remarkable Quenstedtoceras fossil ammonite, preserved from the Upper Callovian Stage of the Jurassic, collected in France. This specimen represents a genuine fragment of Earth’s deep past, capturing the story of ammonites that thrived over 160 million years ago in the warm Jurassic seas. Every fossil we offer is carefully selected for its scientific and aesthetic qualities and comes with a Certificate of Authenticity, confirming it as a genuine specimen. The exact fossil shown in the photos is the piece you will receive.

Geological Age and Locality

The Upper Callovian Stage is part of the Middle Jurassic, dating to approximately 164 to 161 million years ago. The Callovian is particularly well known for its abundance of ammonites, which evolved rapidly and spread widely across marine environments. This specimen originates from France, a country renowned for its exceptional Jurassic fossil deposits, particularly in the Paris Basin and Normandy regions. These strata represent shallow marine environments where ammonites thrived, along with belemnites, marine reptiles, and bivalves.

Scientific Classification

  • Genus: Quenstedtoceras
  • Family: Cardioceratidae
  • Superfamily: Stephanoceratoidea
  • Order: Ammonitida
  • Class: Cephalopoda
  • Age: Upper Callovian, Middle Jurassic
  • Locality: France

Morphological Features

Quenstedtoceras ammonites are instantly recognisable by their elegant ribbed shells and distinct ornamentation. Characteristic features include:

  • Strong, evenly spaced ribs crossing the whorls, often bifurcating near the margin.
  • A moderately involute shell with visible inner whorls.
  • A narrow to moderately wide umbilicus, providing depth to the coiling pattern.
  • A ventral keel that accentuates the hydrodynamic form of the shell.
  • These traits highlight the adaptability of ammonites to their open marine environment, where streamlined shapes would have aided buoyancy control and mobility in search of prey.

Biostratigraphic Importance

Ammonites of the genus Quenstedtoceras serve as important index fossils for the Callovian. Their rapid evolutionary turnover and widespread distribution make them invaluable in correlating Jurassic rock sequences across Europe. Quenstedtoceras is particularly tied to the Quenstedtoceras lamberti biozone, a key stratigraphic marker within the Upper Callovian. For geologists, these fossils provide essential evidence in reconstructing the sequence of Jurassic marine environments, while for collectors, they represent scientifically significant specimens from a crucial stage in ammonite evolution.

Depositional Environment

During the Callovian, France lay beneath epicontinental seas that were shallow, warm, and teeming with life. Ammonites such as Quenstedtoceras were active predators, preying on smaller marine organisms. Their shells, after death, would sink to the sea floor where fine sediments buried and preserved them. Over millions of years, mineralisation turned these shells into the fossils we find today, capturing exquisite detail of ribbing and shell form. The preservation of this specimen offers an invaluable insight into marine ecosystems of the Jurassic.

Collector’s Value and Display Quality

This Quenstedtoceras fossil ammonite is an excellent addition to any fossil collection, combining scientific importance with natural beauty. Its striking ribbing and historical significance make it suitable for collectors, educators, or as a unique geological display piece. As a genuine fossil from the Upper Callovian of France, it embodies both the natural artistry of ancient cephalopods and the deep geological history of Europe.

Item Details

  • Fossil Type: Ammonite – Quenstedtoceras
  • Age: Upper Callovian, Jurassic (approx. 164–161 million years old)
  • Location: France
  • Notable Features: Ribbed shell structure, keel, classic Jurassic morphology
  • Scale: Rule squares/cube = 1 cm (see photo for full sizing)
  • Certificate: Includes a Certificate of Authenticity
  • Specimen Shown: You will receive the exact fossil pictured

An outstanding opportunity to own a scientifically valuable and visually striking Quenstedtoceras fossil ammonite from the Jurassic seas of France.

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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