Description
Rare Hypacanthoplites milletianus Ammonite Fossil from France
This listing features a rare specimen of Hypacanthoplites milletianus, an extinct ammonite species from the Lower Albian stage of the Cretaceous Period, dating to approximately 113–110 million years ago. Sourced from the Alp Martme region of France, this ammonite is both scientifically important and visually striking, representing a key genus within the Hoplitidae family. The fossil you see photographed is the exact specimen you will receive, with a 1 cm scale cube included for accurate sizing. Each fossil comes with a Certificate of Authenticity, ensuring its provenance and genuine nature.
Geological Age and Formation
The Lower Albian marks an important interval of the Early Cretaceous, a period characterised by significant evolutionary changes in ammonite faunas and the expansion of shallow marine environments across Europe. During this time, much of France was submerged beneath warm, epicontinental seas that fostered diverse marine life. Fossil-rich sediments in the Alp Martme area preserve ammonites with excellent detail, providing vital data for paleontological research and geological correlation.
Scientific Classification
- Order: Ammonitida
- Superfamily: Acanthoceratoidea
- Family: Hoplitidae
- Genus: Hypacanthoplites
- Species: Hypacanthoplites milletianus
This ammonite species has been well-documented within Albian biozones and is particularly useful as an index fossil, helping geologists define and correlate Lower Albian strata across Europe.
Morphological Features
Hypacanthoplites milletianus displays a robust, evolute shell with characteristic ribbing that radiates strongly across the flanks and often bifurcates near the ventrolateral shoulder. These ribs give the shell a textured, armoured appearance, while the whorl section is generally rounded to slightly compressed. The ornamentation not only strengthens the shell structure but also creates a visually impressive fossil that is highly sought after by collectors. Well-preserved specimens, such as this example, exhibit clear ribbing and natural growth patterns that highlight the ammonite’s evolutionary adaptations.
Paleontological Importance
Ammonites of the Hoplitidae family, including Hypacanthoplites, are of great significance in stratigraphy due to their short-lived evolutionary stages and widespread distribution. The presence of Hypacanthoplites milletianus in Alp Martme deposits helps define Lower Albian biozones, contributing to the broader understanding of Early Cretaceous marine ecosystems. Their abundance in certain layers makes them excellent markers for establishing precise geological timescales.
Collectability and Display Value
This specimen represents more than just a fossil – it is a unique piece of natural history from the Cretaceous seas of France. Its distinctive ribbing and strong preservation make it both a scientific reference fossil and a striking display piece for collectors, educators, or enthusiasts. The historical and geological context of this ammonite, combined with its visual appeal, ensures it will hold pride of place in any fossil collection.
All of our fossils are 100% genuine specimens and come with a Certificate of Authenticity. This carefully chosen ammonite fossil demonstrates not only the beauty of natural preservation but also the scientific significance of ammonites in understanding Earth’s history.





Reviews
There are no reviews yet.