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Rare 2.75" Orionoides pseudorion Fossil Ammonite | Callovian Jurassic | Montreuil Bellay France | Genuine Specimen with COA
Rare 2.75" Orionoides pseudorion Fossil Ammonite | Callovian Jurassic | Montreuil Bellay France | Genuine Specimen with COA - Image 2
Rare 2.75" Orionoides pseudorion Fossil Ammonite | Callovian Jurassic | Montreuil Bellay France | Genuine Specimen with COA - Image 3

Rare 2.75″ Orionoides pseudorion Fossil Ammonite | Callovian Jurassic | Montreuil Bellay France | Genuine Specimen with COA

£60.00

This listing is for a Rare 2.75″ Fossil Ammonite (Orionoides pseudorion) from the Callovian Stage of the Middle Jurassic, discovered at Montreuil Bellay (Maine-et-Loire, France).

100% Genuine Fossil Specimen – All of our fossils are authentic and come with a Certificate of Authenticity.

Exact Specimen Shown – The photos provided are of the actual fossil you will receive.

Scale for Reference – Scale rule squares/cube = 1cm. Please see photos for full sizing.

 

Geological & Scientific Details:

  • Fossil Type: Ammonite (extinct marine mollusc, related to squid and octopus).
  • Species: Orionoides pseudorion.
  • Order: Ammonitida.
  • Superfamily: Stephanoceratoidea.
  • Family: Stephanoceratidae.
  • Geological Period: Jurassic.
  • Stage/Age: Callovian (approx. 166 – 163 million years ago).
  • Locality: Montreuil Bellay, France.

 

Notable Features & Morphology:

  • Shell Form: Involute with compressed whorls.
  • Ribs: Strong ribbing across the flanks, often bifurcating toward the venter.
  • Whorl Section: Narrow to rounded, with detailed ornamentation typical of Orionoides.
  • Size: At 2.75″, this is a fine and rare example of the species.

 

Depositional Environment:

During the Callovian, the Montreuil Bellay region was part of a shallow marine environment with alternating marl and limestone beds. These deposits provided excellent conditions for ammonite preservation.

 

Scientific & Collecting Importance:

Orionoides pseudorion is a significant ammonite species for biostratigraphic correlation within the Callovian. Its diagnostic ribbing and shell morphology make it an important index fossil and a highly desirable specimen for collectors.

 

Why Buy This Fossil?

  • A rare ammonite species from the Callovian of France.
  • Excellent preservation with clear ribbing and detail.
  • A valuable addition for collectors of Jurassic ammonites or European fossil material.
  • Supplied with a Certificate of Authenticity guaranteeing its provenance.

 

All of our fossils are responsibly sourced, carefully prepared, and chosen for quality.

(Actual as seen)

Only 1 left in stock

SKU: UF4353 Category:

Description

This listing is for a Rare 2.75″ Fossil Ammonite (Orionoides pseudorion) from the Callovian Stage of the Middle Jurassic, discovered at Montreuil Bellay (Maine-et-Loire, France).

100% Genuine Fossil Specimen – All of our fossils are authentic and come with a Certificate of Authenticity.

Exact Specimen Shown – The photos provided are of the actual fossil you will receive.

Scale for Reference – Scale rule squares/cube = 1cm. Please see photos for full sizing.

 

Geological & Scientific Details:

  • Fossil Type: Ammonite (extinct marine mollusc, related to squid and octopus).
  • Species: Orionoides pseudorion.
  • Order: Ammonitida.
  • Superfamily: Stephanoceratoidea.
  • Family: Stephanoceratidae.
  • Geological Period: Jurassic.
  • Stage/Age: Callovian (approx. 166 – 163 million years ago).
  • Locality: Montreuil Bellay, France.

 

Notable Features & Morphology:

  • Shell Form: Involute with compressed whorls.
  • Ribs: Strong ribbing across the flanks, often bifurcating toward the venter.
  • Whorl Section: Narrow to rounded, with detailed ornamentation typical of Orionoides.
  • Size: At 2.75″, this is a fine and rare example of the species.

 

Depositional Environment:

During the Callovian, the Montreuil Bellay region was part of a shallow marine environment with alternating marl and limestone beds. These deposits provided excellent conditions for ammonite preservation.

 

Scientific & Collecting Importance:

Orionoides pseudorion is a significant ammonite species for biostratigraphic correlation within the Callovian. Its diagnostic ribbing and shell morphology make it an important index fossil and a highly desirable specimen for collectors.

 

Why Buy This Fossil?

  • A rare ammonite species from the Callovian of France.
  • Excellent preservation with clear ribbing and detail.
  • A valuable addition for collectors of Jurassic ammonites or European fossil material.
  • Supplied with a Certificate of Authenticity guaranteeing its provenance.

 

All of our fossils are responsibly sourced, carefully prepared, and chosen for quality.

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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