Rare Fagesia superstes Ammonite Fossil Lower Turonian Cretaceous Madagascar with Certificate of Authenticity


£ 32.40

This listing is for a rare Fagesia superstes ammonite fossil, an exceptional
example from the Lower Turonian stage of the Late Cretaceous Period, approximately 93–91 million years old. Sourced from the world-renowned fossil beds of Madagascar, this specimen represents one of the rarer and more scientifically significant ammonite species from the Turonian. Its distinctive morphology and rarity make it a highly desirable fossil for collectors, educators, and natural history enthusiasts.

All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. The photographs show the exact specimen you will receive, with a 1 cm scale cube and rule squares included for accurate sizing. Please consult the images for complete measurements.

GEOLOGICAL CONTEXT AND AGE

This ammonite comes from the Lower Turonian stage of the Late Cretaceous, a time when Madagascar was an island landmass surrounded by warm tropical seas. During this period, sea levels were exceptionally high, and marine life flourished in the shallow waters that covered much of the globe. Ammonites like Fagesia superstes thrived in these environments, along with marine reptiles, fish, and a wide range of invertebrates.

Madagascar is particularly famous for its Cretaceous ammonite deposits, which preserve fossils with remarkable clarity and detail. The specimens from this region provide palaeontologists with crucial evidence for dating and correlating Turonian-aged rock layers across different parts of the world.

MORPHOLOGY AND DISTINCTIVE FEATURES

Fagesia superstes is a member of the family Acanthoceratidae, within the superfamily Acanthoceratoidea of the order Ammonitida. This genus is characterised by its relatively compact, involute shell with strong ornamentation. The shell often displays distinct ribbing and tubercles, features that provided reinforcement against water pressure and possible predation.

This specimen highlights the ornamented shell structure, with ribs crossing the flanks and nodes forming along the ventrolateral margins. These features not only served as functional adaptations but also make the fossil particularly striking in appearance. The robust morphology suggests an active nektonic lifestyle, with Fagesia inhabiting the open marine environment as a capable swimmer and predator.

SCIENTIFIC IMPORTANCE

Ammonites such as Fagesia superstes are important index fossils. Because of their rapid evolutionary turnover and widespread distribution, they are used by palaeontologists to define specific biozones within the Turonian stage. This makes them invaluable for reconstructing the geological history of the Late Cretaceous.

The discovery of Fagesia in Madagascar highlights the global distribution of ammonites during the Cretaceous and provides insights into marine connectivity and biodiversity across the Tethyan realm. Their morphology and stratigraphic importance make them significant for both evolutionary studies and geological dating.

COLLECTOR AND DISPLAY VALUE

This rare ammonite fossil from Madagascar is highly sought after due to its distinctive species identification, rarity, and scientific value. Its striking ornamentation and excellent preservation make it ideal for display, where it can be appreciated as both a natural work of art and a piece of Earth’s ancient history.

Collectors prize Fagesia superstes specimens not only for their rarity but also for their role in Turonian stratigraphy. Owning a specimen such as this offers a unique opportunity to connect with the marine ecosystems of the Cretaceous, over 90 million years ago.

YOUR GUARANTEE OF AUTHENTICITY


• 100% genuine Fagesia superstes ammonite fossil from Madagascar
• Geological age: Lower Turonian, Late Cretaceous (approx. 93–91 million years old)
• Supplied with a Certificate of Authenticity
• Exact specimen shown in photographs (no stock images)
• Scale cube and rule squares = 1 cm (see photos for accurate sizing)

This Fagesia superstes ammonite fossil is a rare and scientifically significant specimen from Madagascar’s renowned Cretaceous deposits. Its rarity, distinctive morphology, and historical importance make it an exceptional addition to any serious fossil collection.