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Mortoniceras Ammonite Fossil | Duck Creek Formation Texas | Upper Albian Cretaceous | Genuine with COA
Mortoniceras Ammonite Fossil | Duck Creek Formation Texas | Upper Albian Cretaceous | Genuine with COA - Image 2

Mortoniceras Ammonite Fossil | Duck Creek Formation Texas | Upper Albian Cretaceous | Genuine with COA

£17.28

This listing is for a genuine Mortoniceras ammonite fossil, unearthed from the Duck Creek Formation in Spring Creek, Cooke County, Texas, USA. Dated to the Upper Albian Stage of the Cretaceous Period (~105 million years ago), this specimen is a rare and scientifically valuable example of marine life from the ancient Western Interior Seaway.

Every fossil we sell is a 100% genuine specimen and includes a Certificate of Authenticity. The photo shows the exact specimen you will receive. The cube in the photo = 1cm for scale. Please refer to the photo for full sizing.

Geological & Palaeontological Details:

  • Fossil Type: Ammonite (extinct marine cephalopod)
  • Genus: Mortoniceras (exact species undetermined)
  • Family: Brancoceratidae
  • Superfamily: Acanthoceratoidea
  • Order: Ammonitida
  • Geological Formation: Duck Creek Formation
  • Geological Age: Upper Albian Stage, Cretaceous Period
  • Depositional Environment: Shallow marine shelf, representing part of the warm, epicontinental Western Interior Seaway

Morphological Features:

  • Involute shell form with strong ribbing and possible presence of tubercles (nodes) along the flanks
  • Sutures are visible and well defined in this specimen
  • Beautifully preserved with contrasting matrix, enhancing visual appeal

Scientific Importance: Mortoniceras species are used as index fossils in the Upper Albian biozone and are highly valued for biostratigraphic correlation. They provide insight into the evolution and migration of ammonites in mid-Cretaceous seas.

While this specimen is not formally identified to the species level, it represents a typical example of the genus Mortoniceras, which was originally described by Meek in 1876.

Display & Presentation:

  • Cube scale = 1cm
  • The photo shows the actual item for sale
  • Ideal for fossil enthusiasts, collectors, educational display, or as a unique gift

Why Choose Us?

  • Every fossil is genuine and responsibly sourced
  • Includes a Certificate of Authenticity
  • Carefully cleaned, selected, and documented

Own a beautiful piece of Earth’s ancient marine history today with this authentic Mortoniceras ammonite fossil from Texas.

(Actual as seen)

Only 1 left in stock

SKU: UF3554 Category:

Description

This listing is for a genuine Mortoniceras ammonite fossil, unearthed from the Duck Creek Formation in Spring Creek, Cooke County, Texas, USA. Dated to the Upper Albian Stage of the Cretaceous Period (~105 million years ago), this specimen is a rare and scientifically valuable example of marine life from the ancient Western Interior Seaway.

Every fossil we sell is a 100% genuine specimen and includes a Certificate of Authenticity. The photo shows the exact specimen you will receive. The cube in the photo = 1cm for scale. Please refer to the photo for full sizing.

Geological & Palaeontological Details:

  • Fossil Type: Ammonite (extinct marine cephalopod)
  • Genus: Mortoniceras (exact species undetermined)
  • Family: Brancoceratidae
  • Superfamily: Acanthoceratoidea
  • Order: Ammonitida
  • Geological Formation: Duck Creek Formation
  • Geological Age: Upper Albian Stage, Cretaceous Period
  • Depositional Environment: Shallow marine shelf, representing part of the warm, epicontinental Western Interior Seaway

Morphological Features:

  • Involute shell form with strong ribbing and possible presence of tubercles (nodes) along the flanks
  • Sutures are visible and well defined in this specimen
  • Beautifully preserved with contrasting matrix, enhancing visual appeal

Scientific Importance: Mortoniceras species are used as index fossils in the Upper Albian biozone and are highly valued for biostratigraphic correlation. They provide insight into the evolution and migration of ammonites in mid-Cretaceous seas.

While this specimen is not formally identified to the species level, it represents a typical example of the genus Mortoniceras, which was originally described by Meek in 1876.

Display & Presentation:

  • Cube scale = 1cm
  • The photo shows the actual item for sale
  • Ideal for fossil enthusiasts, collectors, educational display, or as a unique gift

Why Choose Us?

  • Every fossil is genuine and responsibly sourced
  • Includes a Certificate of Authenticity
  • Carefully cleaned, selected, and documented

Own a beautiful piece of Earth’s ancient marine history today with this authentic Mortoniceras ammonite fossil from Texas.

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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