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RARE Fossil Ammonite Erymnoceras doliforme – Callovian, Jurassic – Russia – Certified Authentic Specimen
RARE Fossil Ammonite Erymnoceras doliforme – Callovian, Jurassic – Russia – Certified Authentic Specimen - Image 2
RARE Fossil Ammonite Erymnoceras doliforme – Callovian, Jurassic – Russia – Certified Authentic Specimen - Image 3

RARE Fossil Ammonite Erymnoceras doliforme – Callovian, Jurassic – Russia – Certified Authentic Specimen

Original price was: £36.00.Current price is: £32.40.

RARE Fossil Ammonite – Erymnoceras doliforme

Callovian Stage, Middle Jurassic – Russia

This exceptional fossil is a genuine specimen of Erymnoceras doliforme, an uncommon ammonite species from the Callovian stage of the Middle Jurassic, sourced from Russian deposits renowned for yielding well-preserved marine invertebrates.

Geological & Scientific Context:

  • Species: Erymnoceras doliforme
  • Geological Period: Jurassic
  • Stage: Callovian (~166–163 million years ago)
  • Provenance: Russia
  • Depositional Environment: Marine shelf to outer shelf settings dominated by clayey and calcareous sediments, supporting a rich benthic and nektonic fauna typical of Jurassic epicontinental seas.

Taxonomic Classification:

  • Kingdom: Animalia
  • Phylum: Mollusca
  • Class: Cephalopoda
  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Stephanoceratidae
  • Genus: Erymnoceras
  • Species: Erymnoceras doliforme
  • First Described By: Oppel, 1857

Morphology & Features:

  • The shell of Erymnoceras doliforme is notably inflated (globular or “doliform”) with tightly coiled whorls and distinct ribbing.
  • Ribs bifurcate or trifurcate along the flanks and typically fade across the venter, which may be broadly rounded or slightly keeled depending on the growth stage.
  • Its shell morphology serves as a key identification feature among Stephanoceratoidea and makes it a valuable marker for zonation within the Callovian.

Stratigraphy & Biozone (if applicable):

Erymnoceras species commonly occur in the Erymnoceras coronatum Biozone, within the upper Callovian. This zone is important in Middle Jurassic biostratigraphy, particularly across Europe and western Russia.

Collectible & Educational Value:

This specimen is a prime example of mid-Jurassic ammonoid diversity and makes an excellent display or teaching piece. Its high-quality preservation and diagnostic features are ideal for collectors, educators, and institutions interested in Jurassic marine paleobiology.

Specimen Details:

  • Scale Cube: 1cm – for full sizing, see photograph
  • Condition: Cleaned and stabilised, showing clear morphological detail
  • Photograph: The image shows the exact fossil you will receive
  • Authenticity: 100% genuine fossil with Certificate of Authenticity
  • Collection Quality: Hand-selected, responsibly sourced specimen

Summary:

This RARE Erymnoceras doliforme ammonite from the Callovian of Russia is a striking fossil representing an extinct cephalopod lineage that once thrived in Jurassic seas. Ideal for scientific, educational, or display purposes, this specimen comes with a Certificate of Authenticity and is part of our curated fossil collection.

(Actual as seen)

Only 1 left in stock

SKU: SF0352 Category:

Description

RARE Fossil Ammonite – Erymnoceras doliforme

Callovian Stage, Middle Jurassic – Russia

This exceptional fossil is a genuine specimen of Erymnoceras doliforme, an uncommon ammonite species from the Callovian stage of the Middle Jurassic, sourced from Russian deposits renowned for yielding well-preserved marine invertebrates.

Geological & Scientific Context:

  • Species: Erymnoceras doliforme
  • Geological Period: Jurassic
  • Stage: Callovian (~166–163 million years ago)
  • Provenance: Russia
  • Depositional Environment: Marine shelf to outer shelf settings dominated by clayey and calcareous sediments, supporting a rich benthic and nektonic fauna typical of Jurassic epicontinental seas.

Taxonomic Classification:

  • Kingdom: Animalia
  • Phylum: Mollusca
  • Class: Cephalopoda
  • Order: Ammonitida
  • Superfamily: Stephanoceratoidea
  • Family: Stephanoceratidae
  • Genus: Erymnoceras
  • Species: Erymnoceras doliforme
  • First Described By: Oppel, 1857

Morphology & Features:

  • The shell of Erymnoceras doliforme is notably inflated (globular or “doliform”) with tightly coiled whorls and distinct ribbing.
  • Ribs bifurcate or trifurcate along the flanks and typically fade across the venter, which may be broadly rounded or slightly keeled depending on the growth stage.
  • Its shell morphology serves as a key identification feature among Stephanoceratoidea and makes it a valuable marker for zonation within the Callovian.

Stratigraphy & Biozone (if applicable):

Erymnoceras species commonly occur in the Erymnoceras coronatum Biozone, within the upper Callovian. This zone is important in Middle Jurassic biostratigraphy, particularly across Europe and western Russia.

Collectible & Educational Value:

This specimen is a prime example of mid-Jurassic ammonoid diversity and makes an excellent display or teaching piece. Its high-quality preservation and diagnostic features are ideal for collectors, educators, and institutions interested in Jurassic marine paleobiology.

Specimen Details:

  • Scale Cube: 1cm – for full sizing, see photograph
  • Condition: Cleaned and stabilised, showing clear morphological detail
  • Photograph: The image shows the exact fossil you will receive
  • Authenticity: 100% genuine fossil with Certificate of Authenticity
  • Collection Quality: Hand-selected, responsibly sourced specimen

Summary:

This RARE Erymnoceras doliforme ammonite from the Callovian of Russia is a striking fossil representing an extinct cephalopod lineage that once thrived in Jurassic seas. Ideal for scientific, educational, or display purposes, this specimen comes with a Certificate of Authenticity and is part of our curated fossil collection.

Additional information

Era

Jurassic
Origin

Russia

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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