Rare Euryptychites latissimus Ammonite Fossil, Tithonian Stage Late Jurassic, Authentic Russia Collectors Piece with COA

Description

Genuine Jurassic Ammonite Fossil

This listing presents a genuine Euryptychites latissimus Ammonite Fossil from the Tithonian Stage of the Late Jurassic, discovered in Russia. Ammonites were extinct marine cephalopods within the subclass Ammonoidea, close relatives of squid and cuttlefish. Their coiled, chambered shells are among the most recognisable fossils, highly valued by collectors and crucial to geological research. The specimen shown in the photographs is the exact fossil you will receive, with a 1 cm scale cube included to provide 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, directly preceding the Cretaceous. During this time, marine ecosystems flourished in shallow epicontinental seas that spread across large portions of Eurasia. Russian deposits from the Tithonian are particularly significant, preserving ammonites and other marine life in remarkable detail.

Ammonites such as Euryptychites latissimus are vital to paleontology because they serve as index fossils. Their relatively short stratigraphic range and rapid evolutionary development make them essential for correlating rock strata and establishing precise geological timelines.

Species Profile – Euryptychites latissimus

The species Euryptychites latissimus belongs to the family Perisphinctidae, within the superfamily Perisphinctoidea and order Ammonitida. Members of this genus are notable for their robust shells and distinctive ornamentation, making them both scientifically valuable and highly desirable to collectors.

Key identifying traits of Euryptychites latissimus include:

• A thick, robust shell with broad whorls.
• Strong ribbing across the flanks, often bifurcating towards the venter.
• Wide, open umbilicus with clearly visible inner whorls.
• A rounded venter lacking a sharp keel, characteristic of the genus.
• Complex suture patterns marking the internal septal divisions.

These traits distinguish E. latissimus from other ammonites of the Tithonian, making it a diagnostic species for Late Jurassic faunas of Russia.

Paleoenvironment and Scientific Importance

During the Tithonian, Russia was part of a vast shallow sea system connected to the northern reaches of the Tethys Ocean. Ammonites like Euryptychites latissimus thrived as nektonic predators, swimming actively and feeding on smaller marine invertebrates. After death, their shells sank to the seafloor, where rapid burial in sediment preserved them for over 150 million years.

The presence of Euryptychites latissimus in Russian deposits is particularly significant for paleontologists, as it helps define ammonite biozones of the Tithonian. These fossils allow geologists to precisely date and correlate Jurassic strata, making them vital for understanding Earth’s deep history.

100% Genuine with Certificate of Authenticity

All of our fossils are guaranteed 100% genuine specimens and are supplied with a Certificate of Authenticity. This ensures your ammonite is not a reproduction or cast but an authentic fossil from the Tithonian Stage of the Jurassic.

A Collector’s and Display Fossil

This Euryptychites latissimus ammonite fossil from the Late Jurassic of Russia is an outstanding specimen for collectors, educators, and natural history enthusiasts. Its robust morphology, scientific importance, and geological provenance make it a centerpiece for any collection or display.

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