Cardioceras densiplicatum Fossil Ammonite Oxfordian Jurassic Poland Genuine Authentic Specimen

Description

Genuine Cardioceras Fossil Ammonite from Poland

This is a carefully selected specimen of Cardioceras densiplicatum boden, a striking ammonite fossil from the Oxfordian Stage of the Jurassic Period, discovered in Zalas, Poland. The ammonite is presented in excellent condition, showing the morphological features that make this species highly prized among collectors and paleontologists. Supplied with a Certificate of Authenticity, this is not only a genuine fossil but also a piece of Earth’s deep natural history, preserved for over 160 million years. The exact fossil shown in the photographs is the one you will receive.

Geological Age and Provenance

The Oxfordian Stage spans approximately 163–157 million years ago and represents the earliest stage of the Late Jurassic Epoch. During this period, Europe was largely submerged beneath warm, shallow seas. The Zalas region of Poland, where this ammonite was discovered, is world-renowned for its well-preserved marine deposits, including ammonites, bivalves, and other marine life that thrived in these Jurassic seas.

Scientific Classification

• Species: Cardioceras densiplicatum boden
• Genus: Cardioceras
• Family: Cardioceratidae
• Superfamily: Stephanoceratoidea
• Order: Ammonitida
• Class: Cephalopoda
• Age: Oxfordian, Jurassic Period
• Locality: Zalas, Poland

Morphological Features

This ammonite fossil displays the defining traits of Cardioceras densiplicatum boden:

• Dense, regular ribbing across the whorls, providing the species name “densiplicatum.”
• A moderately involute shell with a deep umbilicus, giving excellent visibility to inner whorls.
• Strongly sculpted ribs that curve gently forward as they cross the shell flanks and terminate at the venter.
• Fine details of the shell ornamentation, preserved from millions of years of mineralisation.

These characteristics are distinctive to the species and allow paleontologists to identify and classify specimens accurately.

Biostratigraphic and Scientific Importance

Cardioceras ammonites are considered classic index fossils of the Oxfordian Stage. Their rapid evolutionary turnover and wide distribution across Europe make them crucial for correlating stratigraphic layers. In particular, Cardioceras densiplicatum and its subspecies mark specific biozones within the Oxfordian, aiding geologists in dating and interpreting sedimentary deposits. A specimen such as this not only enriches a private collection but also represents a vital tool for understanding Earth’s Jurassic history.

Depositional Environment

During the Oxfordian, Poland was part of a shallow marine basin influenced by warm tropical seas. Ammonites like Cardioceras thrived in these open marine environments as swift-swimming predators feeding on smaller marine creatures. Upon death, their shells settled on the seabed, where they were rapidly buried in fine sediments. Over millions of years, these sediments hardened into limestone, preserving the ammonites as fossils that now serve as windows into prehistoric ecosystems.

Collector’s Appeal

This specimen of Cardioceras densiplicatum boden is not only scientifically valuable but also highly decorative, with its ribbed shell form making it a visually striking display fossil. Its provenance from Zalas, Poland, adds further distinction, as the locality is regarded as one of the classic sites for Oxfordian ammonites. This piece has been carefully selected for quality and preservation, making it suitable for collectors, educators, or enthusiasts of natural history.

Item Details

• Type: Fossil Ammonite – Cardioceras densiplicatum boden
• Age: Oxfordian, Jurassic Period (approx. 163–157 million years old)
• Location: Zalas, Poland
• Notable Features: Strong ribbing, involute shell, deep umbilicus
• Scale: Rule squares/cube = 1 cm (see photo for exact size)
• Authenticity: Supplied with a Certificate of Authenticity
• Specimen: The exact fossil in the photos is the one you will receive

A rare opportunity to own a beautifully preserved Jurassic ammonite from Poland, combining scientific importance, historical value, and natural beauty in one exceptional specimen.