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Aioloceras argentinum Fossil Ammonite | Albian Cretaceous | Madagascar | Genuine Certified Specimen
Aioloceras argentinum Fossil Ammonite | Albian Cretaceous | Madagascar | Genuine Certified Specimen - Image 2

Aioloceras argentinum Fossil Ammonite | Albian Cretaceous | Madagascar | Genuine Certified Specimen

£36.00

This is a rare and beautifully preserved Aioloceras argentinum Fossil Ammonite, originating from the Albian Stage of the Lower Cretaceous, discovered in the marine fossil-rich beds of Madagascar.

Aioloceras argentinum is a distinctive member of the heteromorph ammonites, recognised for its loosely to openly coiled shell structure. This species is notable for its unusual morphology and intricate shell ornamentation, making it a scientifically valuable and visually striking example of mid-Cretaceous cephalopods.

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

The image shows the actual specimen you will receive, with a scale rule and 1cm cube included for size reference. Please review the photo for full dimensions.

 

Geological and Taxonomic Information:

  • Species: Aioloceras argentinum
  • Fossil Type: Ammonite (extinct marine cephalopod)
  • Age: Lower Cretaceous, Albian Stage (~113 to 100.5 million years ago)
  • Location: Madagascar
  • Formation: Likely Mahajanga Basin marine limestone and marl beds
  • Depositional Environment: Warm, shallow marine platform with carbonate sedimentation
  • Geological Stage: Albian

 

Taxonomic Classification:

  • Order: Ammonitida
  • Superfamily: Ancyloceratoidea
  • Family: Turrilitidae
  • Genus: Aioloceras
  • Species: Aioloceras argentinum
  • Formally Described By: Favre, 1907

 

Morphology & Notable Features:

  • Irregular heteromorphic shell with loose to open whorls
  • Strong ribbing with possible ventral constrictions or tuberculation
  • Distinct from other heteromorphs due to its spiral irregularity
  • Excellent preservation of ornamental structure and surface detail

 

Scientific & Collector Significance:

Aioloceras argentinum represents an unusual evolutionary path in ammonite shell development. Its rare form and excellent preservation from Madagascar make it a highly collectible species, prized by fossil specialists and decorative collectors alike.

 

Specimen Details:

  • Approximate Size: Please refer to the photo with 1cm scale cube
  • Condition: Professionally cleaned and prepared
  • Origin: Madagascar
  • Includes: Certificate of Authenticity

 

Ideal For:

  • Cretaceous ammonite collectors and heteromorph enthusiasts
  • Educational and display purposes
  • Museum collections or curated fossil sets
  • Thoughtful, science-themed gifts

 

(Actual as seen)

Only 1 left in stock

SKU: UF4398 Category:

Description

This is a rare and beautifully preserved Aioloceras argentinum Fossil Ammonite, originating from the Albian Stage of the Lower Cretaceous, discovered in the marine fossil-rich beds of Madagascar.

Aioloceras argentinum is a distinctive member of the heteromorph ammonites, recognised for its loosely to openly coiled shell structure. This species is notable for its unusual morphology and intricate shell ornamentation, making it a scientifically valuable and visually striking example of mid-Cretaceous cephalopods.

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

The image shows the actual specimen you will receive, with a scale rule and 1cm cube included for size reference. Please review the photo for full dimensions.

 

Geological and Taxonomic Information:

  • Species: Aioloceras argentinum
  • Fossil Type: Ammonite (extinct marine cephalopod)
  • Age: Lower Cretaceous, Albian Stage (~113 to 100.5 million years ago)
  • Location: Madagascar
  • Formation: Likely Mahajanga Basin marine limestone and marl beds
  • Depositional Environment: Warm, shallow marine platform with carbonate sedimentation
  • Geological Stage: Albian

 

Taxonomic Classification:

  • Order: Ammonitida
  • Superfamily: Ancyloceratoidea
  • Family: Turrilitidae
  • Genus: Aioloceras
  • Species: Aioloceras argentinum
  • Formally Described By: Favre, 1907

 

Morphology & Notable Features:

  • Irregular heteromorphic shell with loose to open whorls
  • Strong ribbing with possible ventral constrictions or tuberculation
  • Distinct from other heteromorphs due to its spiral irregularity
  • Excellent preservation of ornamental structure and surface detail

 

Scientific & Collector Significance:

Aioloceras argentinum represents an unusual evolutionary path in ammonite shell development. Its rare form and excellent preservation from Madagascar make it a highly collectible species, prized by fossil specialists and decorative collectors alike.

 

Specimen Details:

  • Approximate Size: Please refer to the photo with 1cm scale cube
  • Condition: Professionally cleaned and prepared
  • Origin: Madagascar
  • Includes: Certificate of Authenticity

 

Ideal For:

  • Cretaceous ammonite collectors and heteromorph enthusiasts
  • Educational and display purposes
  • Museum collections or curated fossil sets
  • Thoughtful, science-themed gifts

 

Additional information

Era

Cretaceous
Origin

Madagascar

Cretaceous Information

The Cretaceous Period (145–66 million years ago) was the final era of the Mesozoic, marked by the dominance of dinosaurs and the rise of flowering plants. It had a warm, greenhouse climate, with high sea levels that created vast shallow inland seas. Marine life flourished, including mosasaurs, ammonites, and rudist reefs, while the land was ruled by iconic dinosaurs like Tyrannosaurus rex, Triceratops, and Spinosaurus. Mammals and birds diversified, and insects thrived. The period ended with the mass extinction event, likely caused by an asteroid impact, wiping out the dinosaurs and paving the way for the rise of mammals in the Cenozoic.

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