Subvertibriceras densiplicatum Fossil Ammonite Oxfordian Jurassic Neuvizy France Authentic Specimen

Description

This listing offers a superb Subvertibriceras densiplicatum ammonite fossil from the Oxfordian stage of the Jurassic period, approximately 163 to 157 million years old. Found at Neuvizy, France, this specimen represents a significant and collectible example of ammonites from the Late Jurassic seas of Europe. The fossil displays excellent preservation with ribbing and whorl structure clearly visible, showcasing the distinctive morphology of this species. The photographs show the exact specimen you will receive, with a 1 cm scale cube included for accurate sizing. Every fossil in our collection is carefully selected and is guaranteed as genuine, supplied with a Certificate of Authenticity.

Geological Setting

The Oxfordian stage, forming part of the Upper Jurassic, is renowned for its rich diversity of ammonites. During this time, the seas that covered much of Europe supported thriving marine ecosystems. In France, particularly in the Ardennes and surrounding regions such as Neuvizy, sedimentary deposits from the Oxfordian preserve a wide range of ammonite species. These fossiliferous layers represent shallow marine environments that recorded the complex evolutionary pathways of ammonites during this critical period.

Ammonites of the Oxfordian serve as vital biostratigraphic markers, allowing geologists to correlate rock strata across Europe. Species like Subvertibriceras densiplicatum provide key insights into the distribution, diversity, and adaptation of ammonites in Late Jurassic seas.

Morphological Characteristics

This specimen of Subvertibriceras densiplicatum displays several features typical of the genus:

• Whorl structure: A moderately involute shell with overlapping whorls.
• Ribbing: Distinctive dense ribbing, giving the species its name “densiplicatum.”
• Keel: A narrow ventral keel running along the outer margin, enhancing hydrodynamic stability.
• Suture lines: Complex and well-defined sutures that reflect the ammonite’s internal chamber divisions.

These adaptations reflect a free-swimming, nektonic lifestyle in the open ocean. The ribbing would have strengthened the shell against water pressure, while the keel improved movement through the water column.

Scientific and Collector Value

Subvertibriceras densiplicatum belongs to the order Ammonitida, superfamily Perisphinctoidea, and family Perisphinctidae. Ammonites of this group are highly valued for their abundance of species, fine morphological detail, and importance in defining Oxfordian biozones.

For collectors, this ammonite holds both scientific and aesthetic appeal. The sharp ribbing and balanced symmetry of the shell make it a striking display piece. Its provenance from Neuvizy adds further historical and geographical significance, making it an excellent addition to any private collection, teaching resource, or museum-style display.

Key Details

• Species: Subvertibriceras densiplicatum
• Age: Oxfordian, Upper Jurassic (~163–157 million years old)
• Location: Neuvizy, France
• Order: Ammonitida
• Superfamily: Perisphinctoidea
• Family: Perisphinctidae
• Features: Dense ribbing, keel, involute shell, visible suture patterns
• Authenticity: 100% genuine fossil with Certificate of Authenticity
• Scale cube: 1 cm (see photographs for sizing)

This rare Oxfordian ammonite fossil from Neuvizy captures both the beauty and scientific importance of Jurassic ammonites. Its excellent preservation and provenance make it a valuable specimen for collectors and enthusiasts of natural history alike.

Scale cube = 1 cm. Please see photographs for full sizing details.