Fossil Ammonite Eopachydiscus laevicaniculatus Upper Albian Cretaceous Texas COA

Description

Genuine Fossil Ammonite – Eopachydiscus laevicaniculatus

This listing presents a rare and scientifically important ammonite fossil, Eopachydiscus laevicaniculatus, dating from the Upper Albian stage of the Early Cretaceous, approximately 105–100 million years ago. Discovered in North Texas, USA, this ammonite represents a remarkable relic of a warm, shallow sea that once covered the region during the mid-Cretaceous period. The specimen you see in the photographs is the exact fossil you will receive, and it is accompanied by a Certificate of Authenticity, ensuring its genuine and verified origin.

Geological Setting – Upper Albian, Cretaceous of North Texas

During the Albian stage, much of present-day Texas was submerged beneath the Western Interior Seaway, an extensive inland sea that extended from the Gulf of Mexico northwards into the continental interior. The marine sediments laid down in these environments are today exposed in outcrops across Texas and are globally renowned for their fossil content.

The Upper Albian formations of Texas yield an abundance of ammonites, bivalves, and marine reptiles, reflecting a thriving ecosystem in a subtropical epicontinental sea. Eopachydiscus specimens from this region provide critical biostratigraphic markers, assisting palaeontologists in correlating Albian-aged rocks worldwide.

Scientific Classification

• Kingdom: Animalia
• Phylum: Mollusca
• Class: Cephalopoda
• Order: Ammonitida
• Superfamily: Desmoceratoidea
• Family: Desmoceratidae
• Genus: Eopachydiscus
• Species: Eopachydiscus laevicaniculatus

This classification places the species within the Desmoceratidae, a family of smooth- to weakly ornamented ammonites characterised by large, inflated shells and complex suture lines.

Morphological Features

The specimen displays several distinctive characteristics of Eopachydiscus laevicaniculatus:

• Large, discoidal shell with moderately inflated whorls.
• Broad flanks and smooth to faintly ornamented surfaces, typical of the species.
• Fine ventral keel, often visible in well-preserved examples.
• Complex suture pattern, an identifying feature of the Desmoceratidae.
• Robust construction, suggesting strong swimming ability in open marine conditions.

The combination of size, shape, and suture complexity makes this ammonite a particularly attractive fossil for collectors and researchers alike.

Palaeoecology – Life in the Cretaceous Seas of Texas

Eopachydiscus laevicaniculatus was a nektonic carnivore, capable of active swimming and hunting within the warm waters of the Western Interior Seaway. It likely fed on smaller marine organisms such as crustaceans, fish, and other molluscs. The chambered shell provided buoyancy regulation, allowing the ammonite to navigate through varying ocean depths.

The fossil assemblages of the Upper Albian reveal a thriving marine community. Ammonites such as Eopachydiscus coexisted with bivalves, inoceramids, echinoids, and marine reptiles, painting a vivid picture of life in the mid-Cretaceous seas.

Collector and Display Value

This ammonite fossil is both a scientifically significant specimen and an eye-catching display piece. Its origins in the Cretaceous deposits of Texas add considerable value, as these localities are well-regarded for yielding rare and well-preserved cephalopods. Collectors will value its clear morphological detail, while educators and institutions can use it as an excellent teaching aid for topics such as Cretaceous palaeontology, ammonite evolution, and North American geology.

Whether kept in a personal collection, displayed in a study, or presented as a centrepiece in a fossil showcase, this ammonite connects its owner directly to the rich marine ecosystems of the Cretaceous world.

Provenance and Guarantee

• Species: Eopachydiscus laevicaniculatus
• Age: Cretaceous, Upper Albian (approx. 105–100 million years old)
• Location: North Texas, USA
• Geological Formation: Upper Albian marine strata

Every specimen we sell is 100% genuine and comes with a Certificate of Authenticity. The photographs provided show the exact fossil you will receive.

This rare Eopachydiscus laevicaniculatus ammonite from North Texas is a superb collector’s item that captures both the beauty and the scientific value of Earth’s deep past.