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Rare Mariella cenomanensis Heteromorph Ammonite Fossil – Cenomanian, Cretaceous – Seine-Maritime, France – Alice Purnell Collection

Rare Mariella cenomanensis Heteromorph Ammonite Fossil – Cenomanian, Cretaceous – Seine-Maritime, France – Alice Purnell Collection

Original price was: £64.80.Current price is: £58.32.

This listing offers a Rare Mariella cenomanensis Heteromorph Ammonite Fossil from the Cenomanian Stage of the Upper Cretaceous Period, dated to approximately 100.5 to 93.9 million years ago. It was discovered in Seine-Maritime, France, and forms part of the esteemed Alice Purnell Collection.

Mariella cenomanensis is a fascinating heteromorph ammonite, characterised by its loosely coiled, turreted shell structure. Unlike typical planispiral ammonites, heteromorphs like Mariella evolved irregular shell shapes that likely influenced buoyancy and locomotion. This unique morphology makes Mariella species highly collectible and geologically important.

The Cenomanian Stage represents the earliest part of the Late Cretaceous and is known for its rich marine fossil assemblages. During this time, France was covered by shallow epicontinental seas, offering ideal conditions for ammonite preservation. Fossils from this stage reflect the biodiversity and evolutionary complexity of Cretaceous marine ecosystems.

This specimen of Mariella cenomanensis beautifully preserves the diagnostic ribbing and elongated coiling typical of the species. It is an excellent addition for collectors of ammonites, heteromorphs, or rare European fossils.

 

Item Details:

  • Species: Mariella cenomanensis
  • Type: Heteromorph Ammonite Fossil
  • Age: Cenomanian, Upper Cretaceous (approx. 100.5–93.9 million years ago)
  • Location: Seine-Maritime, France
  • Formation: Cretaceous Marine Deposits
  • Source: Alice Purnell Collection
  • Certificate of Authenticity: Included
  • Scale Reference: Scale rule square/cube = 1cm. Please refer to photographs for full sizing.

 

ACTUAL AS SEEN: This is the exact specimen you will receive. Each fossil is hand selected and professionally photographed. Sizing is as accurate as possible, but may vary slightly due to the natural shape. Colours can differ based on lighting and screen settings. Fossils may be propped for photo display purposes.

Once sold, a new specimen will be listed with updated photos and information. We recommend saving a screenshot of your purchased listing for future reference. All specimens are recorded in our photographic archive.

 

Secure a rare heteromorph ammonite fossil from the Cretaceous seas of France – a scientifically significant and visually striking piece of natural history.

(Actual as seen)

Only 1 left in stock

SKU: AF1147 Category:

Description

This listing offers a Rare Mariella cenomanensis Heteromorph Ammonite Fossil from the Cenomanian Stage of the Upper Cretaceous Period, dated to approximately 100.5 to 93.9 million years ago. It was discovered in Seine-Maritime, France, and forms part of the esteemed Alice Purnell Collection.

Mariella cenomanensis is a fascinating heteromorph ammonite, characterised by its loosely coiled, turreted shell structure. Unlike typical planispiral ammonites, heteromorphs like Mariella evolved irregular shell shapes that likely influenced buoyancy and locomotion. This unique morphology makes Mariella species highly collectible and geologically important.

The Cenomanian Stage represents the earliest part of the Late Cretaceous and is known for its rich marine fossil assemblages. During this time, France was covered by shallow epicontinental seas, offering ideal conditions for ammonite preservation. Fossils from this stage reflect the biodiversity and evolutionary complexity of Cretaceous marine ecosystems.

This specimen of Mariella cenomanensis beautifully preserves the diagnostic ribbing and elongated coiling typical of the species. It is an excellent addition for collectors of ammonites, heteromorphs, or rare European fossils.

 

Item Details:

  • Species: Mariella cenomanensis
  • Type: Heteromorph Ammonite Fossil
  • Age: Cenomanian, Upper Cretaceous (approx. 100.5–93.9 million years ago)
  • Location: Seine-Maritime, France
  • Formation: Cretaceous Marine Deposits
  • Source: Alice Purnell Collection
  • Certificate of Authenticity: Included
  • Scale Reference: Scale rule square/cube = 1cm. Please refer to photographs for full sizing.

 

ACTUAL AS SEEN: This is the exact specimen you will receive. Each fossil is hand selected and professionally photographed. Sizing is as accurate as possible, but may vary slightly due to the natural shape. Colours can differ based on lighting and screen settings. Fossils may be propped for photo display purposes.

Once sold, a new specimen will be listed with updated photos and information. We recommend saving a screenshot of your purchased listing for future reference. All specimens are recorded in our photographic archive.

 

Secure a rare heteromorph ammonite fossil from the Cretaceous seas of France – a scientifically significant and visually striking piece of natural history.

Additional information

Era

Cretaceous
Origin

France

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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