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RARE 11" Eopachydiscus marcianus Ammonite Fossil | Albian Cretaceous | Tarrant Co, Fort Worth, Texas USA | Genuine Specimen w/ COA
RARE 11" Eopachydiscus marcianus Ammonite Fossil | Albian Cretaceous | Tarrant Co, Fort Worth, Texas USA | Genuine Specimen w/ COA - Image 2

RARE 11″ Eopachydiscus marcianus Ammonite Fossil | Albian Cretaceous | Tarrant Co, Fort Worth, Texas USA | Genuine Specimen w/ COA

£180.00

A stunning and RARE 11″ specimen of the ammonite Eopachydiscus marcianus, from the Albian stage of the Lower Cretaceous, discovered in Tarrant County near Fort Worth, Texas, USA. This genus represents a remarkable example of mid-Cretaceous ammonoid evolution, known for its large, ornamented shells.

The photo shows the actual fossil you will receive, complete with a 1cm cube scale for sizing reference. This is a 100% genuine fossil, hand-selected for its scientific integrity and aesthetic appeal, and is accompanied by a Certificate of Authenticity.

Geological & Scientific Information:

  • Species: Eopachydiscus marcianus
  • Type: Fossil Ammonite (extinct marine cephalopod)
  • Size: Approx. 11 inches
  • 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 recognised by its large, robust shell, with broad, rounded whorls, prominent ribbing, and gently curved flanks. Ribbing may be straight or slightly flexuous and is often strongest along the ventrolateral shoulder. This specimen highlights classic Albian ornamentation.
  • Depositional Environment: Shallow marine carbonate platform or shelf associated with the Western Interior Seaway. Fossils from this region are typically preserved in marl or limestone.
  • Scientific Importance: Eopachydiscus marcianus is a key marker species within the Albian of North America and contributes to biostratigraphic dating and environmental reconstructions of the mid-Cretaceous Gulf Coastal Plain.

Additional Notes:

Well-preserved large ammonites from Texas are becoming increasingly rare, and this piece offers excellent scientific and display value. Its size and detail make it a standout in any collection.

Why Buy From Us?

  • All fossils are 100% authentic and expertly curated.
  • Includes a Certificate of Authenticity.
  • The exact fossil shown is what you will receive.
  • Ideal for collectors, museums, educators, and fossil enthusiasts.

Add this exceptional 11″ Eopachydiscus marcianus ammonite fossil to your collection and own a significant piece of Albian marine life from the ancient Texas seaway!

(Actual as seen)

Only 1 left in stock

SKU: UF3818 Category:

Description

A stunning and RARE 11″ specimen of the ammonite Eopachydiscus marcianus, from the Albian stage of the Lower Cretaceous, discovered in Tarrant County near Fort Worth, Texas, USA. This genus represents a remarkable example of mid-Cretaceous ammonoid evolution, known for its large, ornamented shells.

The photo shows the actual fossil you will receive, complete with a 1cm cube scale for sizing reference. This is a 100% genuine fossil, hand-selected for its scientific integrity and aesthetic appeal, and is accompanied by a Certificate of Authenticity.

Geological & Scientific Information:

  • Species: Eopachydiscus marcianus
  • Type: Fossil Ammonite (extinct marine cephalopod)
  • Size: Approx. 11 inches
  • 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 recognised by its large, robust shell, with broad, rounded whorls, prominent ribbing, and gently curved flanks. Ribbing may be straight or slightly flexuous and is often strongest along the ventrolateral shoulder. This specimen highlights classic Albian ornamentation.
  • Depositional Environment: Shallow marine carbonate platform or shelf associated with the Western Interior Seaway. Fossils from this region are typically preserved in marl or limestone.
  • Scientific Importance: Eopachydiscus marcianus is a key marker species within the Albian of North America and contributes to biostratigraphic dating and environmental reconstructions of the mid-Cretaceous Gulf Coastal Plain.

Additional Notes:

Well-preserved large ammonites from Texas are becoming increasingly rare, and this piece offers excellent scientific and display value. Its size and detail make it a standout in any collection.

Why Buy From Us?

  • All fossils are 100% authentic and expertly curated.
  • Includes a Certificate of Authenticity.
  • The exact fossil shown is what you will receive.
  • Ideal for collectors, museums, educators, and fossil enthusiasts.

Add this exceptional 11″ Eopachydiscus marcianus ammonite fossil to your collection and own a significant piece of Albian marine life from the ancient Texas seaway!

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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