Fossil Ammonite Brancoceras versicostatum Genuine Cretaceous Lower Albian France

Description

Genuine Fossil Ammonite – Brancoceras versicostatum

This listing offers a finely preserved Fossil Ammonite of the species Brancoceras versicostatum, dating from the Lower Albian stage of the Early Cretaceous Period, discovered in France. At approximately 113–110 million years old, this ammonite is a rare and scientifically significant specimen, prized by both collectors and researchers for its detailed ribbing and its importance in stratigraphy. Carefully chosen for its quality and preservation, this specimen represents a fascinating relic of the Albian seas.

The Species – Brancoceras versicostatum

Brancoceras belongs to the Order Ammonitida, Superfamily Acanthoceratoidea, and Family Brancoceratidae. The species versicostatum is particularly well-known as an important index fossil of the Lower Albian, defining the Versicostatum Zone, which is used worldwide to establish correlations between rock layers of this age. Its name reflects the distinctive rib patterns found on its shell, which alternate in strength and spacing, giving the species a unique and identifiable appearance. For paleontologists, Brancoceras versicostatum is a key marker species of the Early Cretaceous.

Geological Context – Lower Albian, Early Cretaceous

The Lower Albian stage, around 113–110 million years ago, was an interval of rapid ammonite diversification. The marine deposits of France from this period are among the most important Cretaceous fossil beds in Europe. They were formed in shallow seas connected to the expansive Tethys Ocean, where fine marine sediments accumulated and preserved an array of marine life, including ammonites, belemnites, bivalves, and marine reptiles. Fossils from these deposits are internationally recognised for their scientific value and excellent preservation.

Morphological Features of the Fossil

This Brancoceras versicostatum specimen displays all the hallmarks of the species:

• Planispiral coiling, with evenly rounded whorls forming a symmetrical spiral.
• Characteristic ribbing, alternating between stronger and finer ribs across the whorls, giving the species its distinctive “versicostate” appearance.
• Compressed cross-section, creating an elegant yet robust shell profile.
• Fine suture lines, marking the divisions between shell chambers, preserved in parts of the fossil and showcasing the complexity typical of ammonites.

The fossil is displayed with a 1 cm scale cube in the accompanying photographs, giving accurate size reference. The specimen shown is the exact fossil you will receive, chosen for its aesthetic appeal and geological importance.

Scientific Importance

Brancoceras versicostatum is a highly significant ammonite because it defines the Versicostatum Biozone, one of the standard zones used to subdivide the Lower Albian stage. Its widespread distribution and rapid evolutionary turnover make it one of the most reliable fossils for dating Cretaceous marine sediments across Europe and beyond. This makes specimens such as this not only beautiful collector’s items but also crucial scientific tools in geology and paleontology.

Provenance and Authenticity

• Species: Brancoceras versicostatum
• Age: Lower Albian, Early Cretaceous (~113–110 million years old)
• Locality: France
• Family: Brancoceratidae
• Superfamily: Acanthoceratoidea
• Order: Ammonitida

All of our fossils are guaranteed 100% genuine specimens and are supplied with a Certificate of Authenticity, providing full confidence in their authenticity and provenance.

Why This Fossil is Exceptional

• A scientifically important ammonite defining the Versicostatum Biozone.
• Exhibits the classic ribbing and shell morphology of Brancoceras versicostatum.
• Collected from fossil-rich Cretaceous deposits of France.
• Supplied with a Certificate of Authenticity, ensuring authenticity and peace of mind.

This Brancoceras versicostatum ammonite fossil is an excellent specimen combining scientific importance with natural beauty. It is a valuable addition to any serious fossil collection or natural history display.