Rare Euryptychites latissimus Ammonite Fossil Tithonian Jurassic Russia Authentic Specimen COA

Description

Rare Euryptychites latissimus Ammonite Fossil

This listing presents a rare Euryptychites latissimus Ammonite Fossil from the Tithonian stage of the Late Jurassic, collected in Russia. Dated at around 150 million years old, this ammonite represents an extraordinary piece of paleontological heritage. Each specimen we offer is 100% genuine and accompanied by a Certificate of Authenticity. The exact fossil shown in the photographs is the one you will receive, with a 1 cm scale cube included for precise size reference.

Geological Context – Tithonian of Russia

The fossil originates from the world-renowned Russian Tithonian deposits, part of the Volga River basin and other classic localities. During the Late Jurassic, these regions were covered by shallow epicontinental seas connected to the Tethys Ocean, where fine clays, marls, and limestones accumulated, preserving ammonites and other marine organisms in remarkable detail. The Tithonian stage is the final subdivision of the Jurassic period, immediately preceding the Cretaceous. Fossils from these strata are crucial in refining biostratigraphic frameworks and provide invaluable evidence for understanding marine ecosystems just before the great transitions of the Early Cretaceous.

Species Overview – Euryptychites latissimus

This specimen is identified as Euryptychites latissimus, a species of the genus Euryptychites, classified within the order Ammonitida, superfamily Perisphinctoidea, and family Virgatitidae. Ammonites of this genus are distinguished by their robust, involute shells with strong ribbing that often bifurcates across the flanks. Euryptychites latissimus in particular is recognised for its broad whorls and pronounced ornamentation, giving the shell a striking appearance.

The ribbing and shell design provided structural strength and may have played a role in hydrodynamic stability and predator deterrence. These adaptations reflect the ecological success of ammonites in the Tithonian seas. The morphological features of Euryptychites make it an important diagnostic ammonite for paleontologists working with Russian Jurassic sequences.

Paleontological Importance

Euryptychites latissimus is a significant index fossil for the Tithonian stage. Its distinctive morphology and restricted stratigraphic range allow geologists to define specific ammonite biozones, which are used to correlate rock layers across wide geographic regions. Russian ammonites like this are internationally important, as they underpin much of the global Jurassic chronostratigraphic framework.

This species also reflects the evolutionary experimentation of ammonites at the close of the Jurassic, a period of dynamic faunal diversification before the turnover into the Cretaceous. The fossil thus represents both a scientifically valuable reference point and an aesthetic natural relic.

Collector’s and Educational Value

This Euryptychites latissimus ammonite fossil is a rare and highly sought-after specimen. Its bold ribbing and shell form make it an excellent display piece, while its role as an index fossil ensures long-term scientific and educational value. Collectors will appreciate its rarity, and educators can use it as a tangible example of ammonite evolution and Jurassic biostratigraphy.

Guarantee of Authenticity

• 100% genuine Euryptychites latissimus ammonite fossil
• Certificate of Authenticity included
• The exact specimen shown in the photographs will be sent

This is a rare opportunity to acquire a scientifically important and visually striking Euryptychites latissimus Ammonite Fossil from the Tithonian of Russia, an exceptional specimen from the final stage of the Jurassic.