Rare Craspidites nodigER Ammonite Fossil, Tithonian Stage Late Jurassic, Authentic Russia Collectors Piece with Certificate of Authenticity

Description

Genuine Jurassic Ammonite Fossil

This listing features a genuine Craspidites nodigER Ammonite Fossil from the Tithonian Stage of the Late Jurassic, discovered in Russia. Ammonites were extinct marine cephalopods belonging to the subclass Ammonoidea, closely related to squid and cuttlefish. Their distinctive coiled, chambered shells are some of the most iconic and scientifically important fossils in the world. This specimen has been carefully selected for quality and authenticity. The photographs show the exact ammonite you will receive, with a 1 cm scale cube included for accurate size reference.

Geological Context – Tithonian, Jurassic

The Tithonian Stage, dating to approximately 152–145 million years ago, represents the final stage of the Jurassic Period. It directly precedes the Cretaceous and was a time when shallow seas extended across much of Eurasia, supporting abundant marine ecosystems. Russian Tithonian deposits are particularly well known for their diverse and well-preserved ammonite faunas, which serve as important reference points in global stratigraphy.

Ammonites such as Craspidites nodigER are especially valuable as index fossils. Their relatively short stratigraphic range and rapid evolutionary development make them crucial for correlating rock layers and establishing precise geological time intervals in Late Jurassic sequences.

Species Profile – Craspidites nodigER

The species Craspidites nodigER belongs to the family Perisphinctidae, within the superfamily Perisphinctoidea and order Ammonitida. The genus Craspidites is well known in the Tithonian ammonite faunas of Russia, distinguished by its robust morphology and distinct ribbing.

Key identifying traits of Craspidites nodigER include:

• A robust, moderately evolute shell with visible inner whorls.
• Prominent ribbing across the flanks, often bifurcating near the venter.
• A rounded to subangular venter, sometimes displaying a faint keel.
• A wide umbilicus, making the earlier whorls clearly visible.
• Complex suture lines revealing the chamber divisions within the shell.

These characteristics make Craspidites nodigER both a striking collector’s specimen and a diagnostic species for the Tithonian Stage.

Paleoenvironment and Scientific Importance

During the Late Jurassic, the region that is now Russia was part of a vast shallow sea connected to the northern Tethys Ocean. Ammonites like Craspidites nodigER thrived as nektonic predators, swimming actively and feeding on small crustaceans, molluscs, and plankton. When they died, their shells settled on the seabed and were buried in marine sediments, preserving them for over 145 million years.

The significance of Craspidites nodigER lies in its role as a biozonal marker within the Tithonian Stage. Its restricted range allows for precise correlation of Jurassic deposits across Europe and Asia, making it an essential fossil for stratigraphic studies and paleontological research.

100% Genuine with Certificate of Authenticity

All of our fossils are guaranteed 100% genuine specimens and come with a Certificate of Authenticity. This ensures that your ammonite is an authentic relic of the Jurassic seas of Russia and not a cast or reproduction.

A Collector’s and Display Fossil

This Craspidites nodigER ammonite fossil from the Tithonian Stage of Russia is a highly desirable addition to any fossil collection. Its robust shell, distinctive ribbing, and historical significance as a stratigraphic marker make it a standout specimen for collectors, educators, and enthusiasts of natural history alike.

Scale Rule Squares / Cube = 1 cm. Please see listing photos for the full sizing of this exact specimen.