Rare Romaniceras deverianum Ammonite Fossil Cenomanian Cretaceous Sussex UK Genuine Specimen

Description

This listing is for a rare Romaniceras (Romaniceras) deverianum ammonite fossil, a scientifically significant specimen from the Cenomanian stage of the Late Cretaceous Period, approximately 100–94 million years old. Discovered in Sussex, United Kingdom, this ammonite is a fine representative of the diverse and complex ammonite fauna that flourished during the earliest stage of the Late Cretaceous. Its rarity and exceptional provenance make it an excellent addition to any collection of natural history.

All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. The photographs show the exact specimen you will receive, with a 1 cm scale cube and rule squares provided for accurate sizing. Please refer to the images for precise measurements.

Geological Context and Age

This fossil originates from the Cenomanian stage, the first stage of the Late Cretaceous. During this time, high global sea levels created shallow seas across much of Europe, including southern England. The chalk and marl deposits of Sussex record a thriving marine ecosystem filled with ammonites, belemnites, fish, and early marine reptiles.

The Cenomanian is particularly important in the geological record as it marks a major evolutionary radiation of ammonites, which became both abundant and diverse. Fossils like Romaniceras deverianum are critical for defining biozones, allowing geologists to correlate marine sediments across wide geographic areas.

Morphology and Distinctive Features

Romaniceras deverianum is part of the family Acanthoceratidae, within the superfamily Acanthoceratoidea of the order Ammonitida. Members of this genus are recognised for their involute shells with pronounced ornamentation, often featuring strong ribs and tubercles along the flanks and venter.

This specimen exhibits the diagnostic ribbing and nodosity typical of the species. These morphological traits are not only striking in appearance but also scientifically important, providing palaeontologists with key features for identification and stratigraphic placement. The robust structure of the shell suggests adaptation for a free-swimming nektonic lifestyle, enabling Romaniceras to occupy an active predatory role within the Cenomanian seas.

Scientific Importance

Ammonites such as Romaniceras deverianum are invaluable for palaeontology and geology. Their widespread distribution and rapid evolutionary rates make them excellent index fossils, helping to define fine-scale biozones within the Cenomanian stage. This precision is essential for reconstructing Earth’s ancient environments and for correlating rock sequences across different regions.

The occurrence of Romaniceras in Sussex underscores the importance of southern England as a classic area for Cretaceous palaeontology. Fossils from this region have been studied since the 19th century and remain fundamental to understanding the diversity and distribution of Cretaceous ammonite faunas.

Collector and Display Value

This rare Romaniceras deverianum ammonite fossil is a superb specimen for collectors, researchers, and educators. Its provenance from Sussex, a historically important fossil locality, adds value and prestige. The distinct ribbing and tuberculate features make it visually striking, while its rarity enhances its desirability for both private and institutional collections.

Whether displayed as a centrepiece, used in teaching, or treasured as part of a carefully curated fossil collection, this specimen represents both natural beauty and scientific importance.

Your Guarantee of Authenticity

• 100% genuine Romaniceras deverianum ammonite fossil from Sussex, United Kingdom
• Geological age: Cenomanian stage, Late Cretaceous (approx. 100–94 million years old)
• Supplied with a Certificate of Authenticity
• Exact specimen shown in photographs (no stock images used)
• Scale cube and rule squares = 1 cm (see images for accurate sizing)

This Romaniceras deverianum ammonite fossil is a rare and scientifically valuable specimen from the Cenomanian deposits of Sussex. With its strong diagnostic features, authentic provenance, and guaranteed authenticity, it is a truly exceptional fossil for serious collectors and enthusiasts alike.