Paramammites polymorphum Fossil Ammonite Lower Turonian Cretaceous Soria Burgos Spain with Certificate

Description

Authentic Paramammites polymorphum Fossil Ammonite

This is a genuine Paramammites polymorphum fossil ammonite from the Lower Turonian Stage of the Cretaceous Period, approximately 93–90 million years old. It was discovered in the fossil-rich deposits of Soria and Burgos, Spain, a region renowned for its well-preserved Cretaceous marine faunas. Each specimen is carefully chosen for its scientific and aesthetic quality and is accompanied by a Certificate of Authenticity, ensuring it is a 100% genuine specimen. The photos show the exact fossil you will receive, with a 1 cm scale cube and rule for accurate sizing reference.

Geological Context

The Lower Turonian marks the early part of the Turonian Stage in the Late Cretaceous. During this time, high global sea levels created shallow epicontinental seas across much of Europe, including present-day Spain. These seas were teeming with ammonites, molluscs, and marine reptiles, leaving behind abundant and diverse fossil assemblages.

The deposits of Soria and Burgos belong to the Iberian ranges, where well-stratified limestone and marl sequences preserve ammonite faunas. These strata are significant for biostratigraphy, as ammonites like Paramammites polymorphum provide precise markers for dating and correlating Turonian-aged rocks across Europe and beyond.

Scientific Classification

• Genus: Paramammites
• Species: Paramammites polymorphum
• Order: Ammonitida
• Superfamily: Acanthocerataceae
• Family: Mammitidae
• Geological Stage: Lower Turonian, Cretaceous
• Provenance: Soria and Burgos, Spain

This species is considered an important index fossil for the Lower Turonian and contributes to refining the ammonite zonation of the Iberian Peninsula.

Morphological Features

Paramammites polymorphum is characterized by:

• A robust, involute shell with moderately compressed whorls.
• Strong, regular ribbing that traverses the flanks and extends across the venter.
• Occasional tubercles or nodes on the ribs, reflecting the defensive and structural adaptations of the shell.
• A well-marked suture line, preserved in this specimen, which helps paleontologists classify its evolutionary relationships.

These features demonstrate the ammonite’s adaptation to life in warm, shallow seas, where streamlined shells aided in buoyancy and movement.

Collector and Scientific Value

Ammonites such as Paramammites polymorphum are invaluable for their role as biostratigraphic markers, allowing precise correlation of Cretaceous marine strata across Europe. Their relatively restricted time range and distinctive morphology make them highly sought after by both collectors and researchers.

For private collectors, this specimen represents an exceptional opportunity to acquire a rare and scientifically significant ammonite from Spain. Ammonites from the Iberian Peninsula are less commonly seen in collections compared with Moroccan or French examples, making this fossil particularly desirable.

Display and Educational Significance

This specimen is perfect for display in a collection, educational setting, or museum, where it serves as both a striking natural artifact and a teaching tool. Its preserved detail allows enthusiasts and students to appreciate the complexity of ammonite morphology and the evolutionary history of cephalopods.

Owning a Paramammites polymorphum fossil ammonite from Soria and Burgos, Spain offers a direct connection to the ancient Cretaceous seas and highlights the diversity of ammonite life during the Lower Turonian. This rare piece embodies the blend of scientific importance and natural beauty that defines the best fossil specimens.