Rare Craspidites nodiger Ammonite Fossil Tithonian Jurassic Russia Authentic Specimen COA

Description

Rare Craspidites nodiger Ammonite Fossil

This listing features a rare Craspidites nodiger Ammonite Fossil from the Tithonian stage of the Late Jurassic, collected in Russia. Estimated at around 150 million years old, this ammonite is a scientifically significant specimen, highly valued for both its rarity and its role in Jurassic biostratigraphy. The fossil shown in the photograph is the exact piece you will receive, with a 1 cm scale cube for reference. Every fossil we offer is 100% genuine and comes with a Certificate of Authenticity, ensuring its provenance and scientific reliability.

Geological Context – Tithonian of Russia

This ammonite originates from the Russian Platform deposits, which are globally important fossil-bearing strata. During the Tithonian, the final stage of the Jurassic, this region was part of a vast marine environment influenced by the Tethys Ocean. Sediments of clay, marl, and limestone accumulated in these shallow basins, creating excellent conditions for fossil preservation. Russian ammonite faunas from this stage are internationally renowned, with species like Craspidites nodiger forming essential benchmarks for stratigraphic studies. These beds are among the richest and most informative Jurassic deposits in the world, providing material crucial to understanding the transition from the Jurassic into the Cretaceous.

Species Overview – Craspidites nodiger

The fossil belongs to Craspidites nodiger, a species of the genus Craspidites, which is classified within the order Ammonitida, superfamily Perisphinctoidea, and family Craspeditidae. Ammonites of this genus are highly characteristic of the Russian Tithonian and are easily recognisable by their robust, involute shells with distinctive ribbing and nodose ornamentation.

The ribs on Craspidites nodiger often terminate in small nodes or tubercles, giving the shell an attractive and diagnostic appearance. These features make it one of the more distinctive ammonites of the Late Jurassic. Its morphology suggests a nektonic lifestyle, swimming in open marine waters and playing an active role in the predator-prey dynamics of the Tithonian seas.

Paleontological Importance

Craspidites nodiger is a particularly valuable index fossil. Its well-documented stratigraphic range within the Russian Tithonian allows paleontologists to define and correlate biozones with precision. Ammonites such as this are critical to constructing global Jurassic chronostratigraphy, linking local fossil records to broader geological frameworks.

Beyond stratigraphy, the morphology of Craspidites nodiger reflects evolutionary adaptations that were occurring at the close of the Jurassic. The robust shell and ornamentation are thought to have served both hydrodynamic and defensive functions, protecting against predators and reinforcing the shell structure in open marine environments.

Collector’s and Educational Value

This Craspidites nodiger ammonite fossil is a rare and desirable specimen for any serious fossil collection. Its strong ribbing and nodose ornamentation make it a striking display piece, while its scientific importance ensures long-term value for researchers and educators alike. Owning a specimen of this type is an opportunity to hold a piece of natural history that played a pivotal role in defining Jurassic biostratigraphy.

Guarantee of Authenticity

• 100% genuine Craspidites nodiger ammonite fossil
• Supplied with a Certificate of Authenticity
• The fossil shown in the photograph is the exact specimen you will receive

This is a rare chance to acquire an exceptional Craspidites nodiger Ammonite Fossil from the Tithonian of Russia, a scientifically significant and visually stunning specimen from the close of the Jurassic period.