Description
Authentic Acanthoceras basseae Fossil Ammonite from Pavilly, France
This listing presents a genuine Acanthoceras basseae fossil ammonite, originating from the Lower Cenomanian stage of the Late Cretaceous, approximately 100–94 million years ago. The specimen was discovered in the fossil-rich strata near Pavilly, Normandy, France, a classic locality well regarded for its beautifully preserved ammonites. Each fossil is carefully chosen for quality and preservation and is supplied with a Certificate of Authenticity. The photos show the exact piece you will receive, with a 1 cm cube and scale rule included for precise sizing.
Geological Setting
The Lower Cenomanian marks the beginning of the Cenomanian Age, the first subdivision of the Late Cretaceous. During this time, much of Europe was submerged under shallow seas, which created ideal conditions for ammonites such as Acanthoceras basseae to flourish. The marine limestones and marls of Pavilly record a diverse fauna that includes ammonites, belemnites, bivalves, and marine reptiles. These deposits are crucial for understanding the faunal turnovers and paleoenvironmental changes at the onset of the Late Cretaceous.
The Cenomanian stage also coincides with a period of high global sea levels and the occurrence of oceanic anoxic events, which influenced the evolution and distribution of ammonites. Fossils from this interval are invaluable both for collectors and for scientific study.
Scientific Classification
- Genus: Acanthoceras
- Species: Acanthoceras basseae
- Order: Ammonitida
- Superfamily: Acanthoceratoidea
- Family: Acanthoceratidae
- Age: Lower Cenomanian, Cretaceous (approx. 100–94 million years ago)
- Locality: Pavilly, Normandy, France
As a member of the Acanthoceratidae family, A. basseae is an important index fossil, enabling precise dating of Cenomanian marine sediments.
Morphological Features
The Acanthoceras basseae ammonite is admired for its distinct ornamentation and shell structure. Some key features include:
- Strongly ribbed shell, with ribs crossing the venter uninterrupted.
- Tubercles (nodes) positioned along the flanks and ventrolateral edges, giving the shell a spiny appearance.
- A moderately evolute coiling, exposing earlier whorls clearly.
- Complex suture lines characteristic of the family, often visible in well-preserved specimens.
- Shells vary in size but are often medium to large, making them excellent display fossils.
These traits not only enhance their visual appeal but also make them highly significant for ammonite taxonomy and stratigraphy.
Scientific and Collecting Importance
- Acanthoceras basseae* is one of the defining ammonites of the Lower Cenomanian and is widely recognised as a biostratigraphic marker fossil. Its presence allows geologists to correlate rock layers across Europe and beyond.
- For collectors, this species represents a striking example of Cretaceous ammonites, combining rarity, distinctive morphology, and historical importance. Fossils from Pavilly are sought after due to the site’s reputation for producing excellent specimens.
Display and Educational Value
This Acanthoceras basseae fossil ammonite from Pavilly, France is more than a collector’s item. It offers a tangible connection to the Cretaceous seas of Europe, capturing a moment in deep geological time. Its robust ribbing and tuberculation make it visually striking for display, while its scientific role as a marker fossil adds educational depth.
- For collectors: A rare and highly desirable ammonite species from a classic locality.
- For educators and students: A reference specimen for ammonite morphology, paleoecology, and stratigraphy.
- For display: A natural work of art, ideal for showcasing in homes, offices, or museums.
Every specimen is guaranteed genuine and comes with a Certificate of Authenticity, making this ammonite a trustworthy and impressive addition to any fossil collection.
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