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VERY RARE Heteromorph Ammonite Scaphites Clioscaphites montanai, Santonian, Cretaceous: Montana, USA – Genuine Fossil with COA

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

This VERY RARE Heteromorph Ammonite, identified as Scaphites Clioscaphites montanai, is a fascinating and significant fossil from the Santonian stage of the Cretaceous period. It was discovered in Montana, USA, from the Pierre Shales and Fox Hills Sandstone formations. This ammonite provides an excellent opportunity to own a rare and well-preserved specimen from one of the most iconic and ancient marine creatures of the Late Cretaceous.

Geology and Fossil Type

  • Fossil Type: Ammonite
  • Species: Scaphites Clioscaphites montanai
  • Geological Stage: Santonian, Cretaceous
  • Depositional Environment: Marine
  • Zone: Pierre Shales, Fox Hills Sandstone
  • Family: Acanthoscaphitidae
  • Superfamily: Ammonoidea
  • Order: Ammonitida

Morphology Features

  • Heteromorph Shape: As a heteromorph ammonite, Scaphites Clioscaphites montanai exhibits irregular coiling, making it an exciting and distinctive fossil.
  • Visible Suture Lines: The fossil clearly shows well-preserved suture lines, which are essential for classification and species identification in ammonites. These intricate suture patterns are one of the defining features of ammonites in the Acanthoscaphitidae family.
  • Size and Dimensions: Please refer to the photo for full size details. The fossil comes with a scale cube of 1cm to assist with size estimation.

Notable Features

  • Extremely Rare Species: Scaphites Clioscaphites montanai is a rare and sought-after ammonite species due to its distinctive coiling and historical significance from the Santonian stage.
  • Excellent Preservation: This fossil exhibits excellent preservation of its spiral structure, chamber walls, and sutural details, making it a standout specimen for collectors.
  • Appealing Aesthetic: The ammonite has a striking irregular, knobby shape that enhances its visual appeal, perfect for display or study.

Scientific and Historical Value

  • Fossils from the Santonian stage provide valuable insight into the marine ecosystems of the Late Cretaceous period. The Scaphites genus, specifically Clioscaphites montanai, is an important marker for understanding ammonite evolution and the marine biodiversity of this era.
  • Pierre Shales and Fox Hills Sandstone are well-known for their marine fossils and are famous for preserving ammonites, which provide key information about paleoenvironments during the Cretaceous period.

Size and Presentation

  • Scale Cube: 1cm
  • Full Size: Please refer to the photo for full size details. This fossil has been carefully selected for its exceptional preservation and rare features.
  • The photo shown is the actual specimen you will receive, ensuring that you get exactly what you see in the listing.

Key Selling Points

  • 100% Genuine Fossil
  • Comes with a Certificate of Authenticity
  • Rare ammonite from the Santonian stage, Cretaceous period
  • Discovered in the Pierre Shales and Fox Hills Sandstone formations, Montana, USA
  • Beautifully preserved with distinctive spiral coiling and detailed suture lines
  • Ideal for fossil collectors, scientific research, or as a unique display piece
  • Perfect for marine life enthusiasts, ammonite collectors, or paleontology lovers

This VERY RARE Heteromorph Ammonite from the Santonian stage, Cretaceous period, is an exceptional fossil that offers ammonite collectors and paleontology enthusiasts a rare glimpse into ancient marine life. The specimen is beautifully preserved and comes with a Certificate of Authenticity. Don’t miss the opportunity to own a piece of Cretaceous marine history!

(Actual as seen)

Only 1 left in stock

SKU: UF4607 Category:

Description

This VERY RARE Heteromorph Ammonite, identified as Scaphites Clioscaphites montanai, is a fascinating and significant fossil from the Santonian stage of the Cretaceous period. It was discovered in Montana, USA, from the Pierre Shales and Fox Hills Sandstone formations. This ammonite provides an excellent opportunity to own a rare and well-preserved specimen from one of the most iconic and ancient marine creatures of the Late Cretaceous.

Geology and Fossil Type

  • Fossil Type: Ammonite
  • Species: Scaphites Clioscaphites montanai
  • Geological Stage: Santonian, Cretaceous
  • Depositional Environment: Marine
  • Zone: Pierre Shales, Fox Hills Sandstone
  • Family: Acanthoscaphitidae
  • Superfamily: Ammonoidea
  • Order: Ammonitida

Morphology Features

  • Heteromorph Shape: As a heteromorph ammonite, Scaphites Clioscaphites montanai exhibits irregular coiling, making it an exciting and distinctive fossil.
  • Visible Suture Lines: The fossil clearly shows well-preserved suture lines, which are essential for classification and species identification in ammonites. These intricate suture patterns are one of the defining features of ammonites in the Acanthoscaphitidae family.
  • Size and Dimensions: Please refer to the photo for full size details. The fossil comes with a scale cube of 1cm to assist with size estimation.

Notable Features

  • Extremely Rare Species: Scaphites Clioscaphites montanai is a rare and sought-after ammonite species due to its distinctive coiling and historical significance from the Santonian stage.
  • Excellent Preservation: This fossil exhibits excellent preservation of its spiral structure, chamber walls, and sutural details, making it a standout specimen for collectors.
  • Appealing Aesthetic: The ammonite has a striking irregular, knobby shape that enhances its visual appeal, perfect for display or study.

Scientific and Historical Value

  • Fossils from the Santonian stage provide valuable insight into the marine ecosystems of the Late Cretaceous period. The Scaphites genus, specifically Clioscaphites montanai, is an important marker for understanding ammonite evolution and the marine biodiversity of this era.
  • Pierre Shales and Fox Hills Sandstone are well-known for their marine fossils and are famous for preserving ammonites, which provide key information about paleoenvironments during the Cretaceous period.

Size and Presentation

  • Scale Cube: 1cm
  • Full Size: Please refer to the photo for full size details. This fossil has been carefully selected for its exceptional preservation and rare features.
  • The photo shown is the actual specimen you will receive, ensuring that you get exactly what you see in the listing.

Key Selling Points

  • 100% Genuine Fossil
  • Comes with a Certificate of Authenticity
  • Rare ammonite from the Santonian stage, Cretaceous period
  • Discovered in the Pierre Shales and Fox Hills Sandstone formations, Montana, USA
  • Beautifully preserved with distinctive spiral coiling and detailed suture lines
  • Ideal for fossil collectors, scientific research, or as a unique display piece
  • Perfect for marine life enthusiasts, ammonite collectors, or paleontology lovers

This VERY RARE Heteromorph Ammonite from the Santonian stage, Cretaceous period, is an exceptional fossil that offers ammonite collectors and paleontology enthusiasts a rare glimpse into ancient marine life. The specimen is beautifully preserved and comes with a Certificate of Authenticity. Don’t miss the opportunity to own a piece of Cretaceous marine history!

Additional information

Era

Cretaceous

Origin

USA

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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