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RARE 12.5" Eopachydiscus marcianus Ammonite Fossil | Albian Cretaceous | Tarrant Co, Fort Worth, Texas USA | Genuine Specimen w/ COA
RARE 12.5" Eopachydiscus marcianus Ammonite Fossil | Albian Cretaceous | Tarrant Co, Fort Worth, Texas USA | Genuine Specimen w/ COA - Image 2

RARE 12.5″ Eopachydiscus marcianus Ammonite Fossil | Albian Cretaceous | Tarrant Co, Fort Worth, Texas USA | Genuine Specimen w/ COA

£360.00

Presenting a RARE and impressively large 12.5″ specimen of the ammonite Eopachydiscus marcianus, collected from Tarrant County, near Fort Worth, Texas, USA. This fossil dates to the Albian stage of the Lower Cretaceous, and represents a significant piece of North American paleontological history.

The photo displays the exact fossil you will receive, with a 1cm cube scale included for accurate size reference. As always, the specimen is a 100% genuine fossil, hand-selected and accompanied by a Certificate of Authenticity.

Geological & Scientific Information:

  • Species: Eopachydiscus marcianus
  • Type: Fossil Ammonite (extinct marine cephalopod)
  • Size: 12.5 inches (approx.)
  • Geological Period: Cretaceous
  • Stage: Albian (approx. 113–100.5 million years ago)
  • Location Found: Tarrant County, Fort Worth, Texas, USA
  • Order: Ammonitida
  • Superfamily: Desmoceratoidea
  • Family: Pachydiscidae
  • Morphological Features: Eopachydiscus is known for its large, thick-walled, moderately involute shell with rounded whorls. Ribs are typically strong and spaced, curving slightly forward along the flanks. This specimen exhibits excellent preservation, showcasing both the classic coiling and well-defined ribbing.
  • Depositional Environment: Deposited in a shallow inland seaway setting, the Texas Gulf Coast region during the Albian was a warm, tropical marine environment ideal for ammonite habitation and fossilisation in chalky limestone and marl.
  • Scientific Importance: Eopachydiscus marcianus is a distinctive species found in the Albian strata of North America, used in regional biostratigraphy. Its large size and preservation quality make it a significant find for both research and display.

Additional Notes:

North American Cretaceous ammonites like this are increasingly rare in such large and complete form. This specimen is not only a striking natural object but also a valuable scientific reference point for understanding the Albian faunal record.

Why Buy From Us?

  • 100% genuine, expertly curated fossil specimens.
  • Includes a Certificate of Authenticity.
  • You receive the exact fossil pictured.
  • Ideal for private collectors, museums, educators, or natural history enthusiasts.

Add this spectacular 12.5″ Eopachydiscus marcianus ammonite fossil to your collection and own a true piece of Cretaceous-era marine life from Texas!

(Actual as seen)

Includes a fully hand-signed Premium Certificate of Authenticity.

Only 1 left in stock

SKU: UF3817 Category:

Description

Presenting a RARE and impressively large 12.5″ specimen of the ammonite Eopachydiscus marcianus, collected from Tarrant County, near Fort Worth, Texas, USA. This fossil dates to the Albian stage of the Lower Cretaceous, and represents a significant piece of North American paleontological history.

The photo displays the exact fossil you will receive, with a 1cm cube scale included for accurate size reference. As always, the specimen is a 100% genuine fossil, hand-selected and accompanied by a Certificate of Authenticity.

Geological & Scientific Information:

  • Species: Eopachydiscus marcianus
  • Type: Fossil Ammonite (extinct marine cephalopod)
  • Size: 12.5 inches (approx.)
  • Geological Period: Cretaceous
  • Stage: Albian (approx. 113–100.5 million years ago)
  • Location Found: Tarrant County, Fort Worth, Texas, USA
  • Order: Ammonitida
  • Superfamily: Desmoceratoidea
  • Family: Pachydiscidae
  • Morphological Features: Eopachydiscus is known for its large, thick-walled, moderately involute shell with rounded whorls. Ribs are typically strong and spaced, curving slightly forward along the flanks. This specimen exhibits excellent preservation, showcasing both the classic coiling and well-defined ribbing.
  • Depositional Environment: Deposited in a shallow inland seaway setting, the Texas Gulf Coast region during the Albian was a warm, tropical marine environment ideal for ammonite habitation and fossilisation in chalky limestone and marl.
  • Scientific Importance: Eopachydiscus marcianus is a distinctive species found in the Albian strata of North America, used in regional biostratigraphy. Its large size and preservation quality make it a significant find for both research and display.

Additional Notes:

North American Cretaceous ammonites like this are increasingly rare in such large and complete form. This specimen is not only a striking natural object but also a valuable scientific reference point for understanding the Albian faunal record.

Why Buy From Us?

  • 100% genuine, expertly curated fossil specimens.
  • Includes a Certificate of Authenticity.
  • You receive the exact fossil pictured.
  • Ideal for private collectors, museums, educators, or natural history enthusiasts.

Add this spectacular 12.5″ Eopachydiscus marcianus ammonite fossil to your collection and own a true piece of Cretaceous-era marine life 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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