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 4" Fossil Ammonite Hammatoceras speciosum | Jurassic Toarcian Ligron France | Genuine Specimen + COA
Rare 4" Fossil Ammonite Hammatoceras speciosum | Jurassic Toarcian Ligron France | Genuine Specimen + COA - Image 2

Rare 4″ Fossil Ammonite Hammatoceras speciosum | Jurassic Toarcian Ligron France | Genuine Specimen + COA

£72.00

Offered here is a rare and finely detailed 4-inch fossil ammonite, Hammatoceras speciosum, from the Toarcian Stage of the Jurassic Period, discovered in Ligron, Sarthe, France. You will receive the exact specimen shown in the photographs. Each cube in the scale image represents 1cm — please refer to the photo for full sizing.

This fossil has been carefully selected for its outstanding preservation and aesthetic appeal.

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

Geological & Scientific Information:

  • Fossil Type: Ammonite
  • Species: Hammatoceras speciosum
  • Order: Ammonitida
  • Superfamily: Hildoceratoidea
  • Family: Hammatoceratidae
  • Geological Stage: Lower Toarcian (approx. 182.7 – 174.1 million years ago)
  • Biozone: Speciosum Subzone of the Bifrons Zone (this species is the index fossil for the subzone)
  • Period: Jurassic
  • Locality: Ligron, Sarthe, Pays de la Loire, France
  • Depositional Environment: Offshore marine basin with calcareous, fine-grained sediments deposited under moderate to low-energy conditions, often linked to the Toarcian Oceanic Anoxic Event (T-OAE)

Morphology & Notable Features:

  • Planispiral, evolute shell with broad whorls
  • Strong, radial ribbing that bifurcates across the flanks
  • Large umbilicus with well-defined suture lines
  • Venter often rounded or keeled depending on preservation
  • Characteristic of the genus Hammatoceras, particularly speciosum, which is widely recognised for its distinctive ornamentation and biozone significance

Scientific Significance:

Hammatoceras speciosum is a key biostratigraphic species used to define the Speciosum Subzone of the Toarcian Bifrons Zone. It is highly important for correlating marine Jurassic strata across Europe.

The species is well documented in classic 19th-century paleontological literature and continues to be a benchmark ammonite for stratigraphers and collectors alike. Its association with the Toarcian Oceanic Anoxic Event also adds value for paleoenvironmental studies.

Ideal For:

  • Collectors of rare European ammonites
  • Biostratigraphic or academic reference material
  • Geological and paleontological displays
  • Museums or higher-education teaching collections

What You Will Receive:

  • The exact Hammatoceras speciosum fossil shown in the photos
  • Certificate of Authenticity
  • Secure and professional packaging for safe transport

 

(Actual as seen)

Only 1 left in stock

SKU: UF4537 Category:

Description

Offered here is a rare and finely detailed 4-inch fossil ammonite, Hammatoceras speciosum, from the Toarcian Stage of the Jurassic Period, discovered in Ligron, Sarthe, France. You will receive the exact specimen shown in the photographs. Each cube in the scale image represents 1cm — please refer to the photo for full sizing.

This fossil has been carefully selected for its outstanding preservation and aesthetic appeal.

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

Geological & Scientific Information:

  • Fossil Type: Ammonite
  • Species: Hammatoceras speciosum
  • Order: Ammonitida
  • Superfamily: Hildoceratoidea
  • Family: Hammatoceratidae
  • Geological Stage: Lower Toarcian (approx. 182.7 – 174.1 million years ago)
  • Biozone: Speciosum Subzone of the Bifrons Zone (this species is the index fossil for the subzone)
  • Period: Jurassic
  • Locality: Ligron, Sarthe, Pays de la Loire, France
  • Depositional Environment: Offshore marine basin with calcareous, fine-grained sediments deposited under moderate to low-energy conditions, often linked to the Toarcian Oceanic Anoxic Event (T-OAE)

Morphology & Notable Features:

  • Planispiral, evolute shell with broad whorls
  • Strong, radial ribbing that bifurcates across the flanks
  • Large umbilicus with well-defined suture lines
  • Venter often rounded or keeled depending on preservation
  • Characteristic of the genus Hammatoceras, particularly speciosum, which is widely recognised for its distinctive ornamentation and biozone significance

Scientific Significance:

Hammatoceras speciosum is a key biostratigraphic species used to define the Speciosum Subzone of the Toarcian Bifrons Zone. It is highly important for correlating marine Jurassic strata across Europe.

The species is well documented in classic 19th-century paleontological literature and continues to be a benchmark ammonite for stratigraphers and collectors alike. Its association with the Toarcian Oceanic Anoxic Event also adds value for paleoenvironmental studies.

Ideal For:

  • Collectors of rare European ammonites
  • Biostratigraphic or academic reference material
  • Geological and paleontological displays
  • Museums or higher-education teaching collections

What You Will Receive:

  • The exact Hammatoceras speciosum fossil shown in the photos
  • Certificate of Authenticity
  • Secure and professional packaging for safe transport

 

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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