Description
Genuine Metiococeras geslinianum Fossil Ammonite from France
This listing is for an authentic Metiococeras geslinianum fossil ammonite, originating from the Lower Turonian stage of the Late Cretaceous, approximately 93–89 million years ago. The specimen was discovered in the classic fossil beds of Chers, France, an important locality known for its beautifully preserved Cretaceous ammonites. Each fossil is carefully selected for quality and comes with a Certificate of Authenticity. The photos show the exact specimen you will receive, with a 1 cm scale cube and rule provided for accurate sizing.
Geological Setting
The Lower Turonian follows the Cenomanian and is part of the Late Cretaceous epoch, a time of major global sea-level rise. Much of present-day Europe, including France, was submerged beneath warm epicontinental seas. These shallow marine environments created ideal conditions for ammonites such as Metiococeras geslinianum to flourish.
The deposits at Chers contain fine-grained marine sediments that preserve ammonites in exceptional detail. These strata are particularly valuable for paleontological studies, as they record faunal turnover after the Cenomanian-Turonian boundary event, one of the most significant oceanic anoxic events of the Cretaceous.
Scientific Classification
- Genus: Metiococeras
- Species: Metiococeras geslinianum
- Order: Ammonitida
- Superfamily: Acanthoceratoidea
- Family: Acanthoceratidae
- Age: Lower Turonian, Cretaceous (approx. 93–89 million years ago)
- Locality: Chers, France
As a member of the Acanthoceratidae family, this ammonite is considered an important index fossil, allowing precise dating of Turonian marine strata.
Morphological Features
The Metiococeras geslinianum ammonite is admired for its distinctive shell structure and striking ornamentation. Notable traits include:
- Strong ribbing extending across the flanks and ventral region.
- Tubercles (nodes) on the flanks and ventrolateral edges, a defining characteristic of the genus.
- A moderately evolute coiling, meaning the earlier whorls are clearly visible.
- A sturdy shell with a relatively compressed whorl section, enhancing its visual appeal.
- Complex suture lines, typical of ammonites from this family.
These features not only make the fossil aesthetically attractive but also provide valuable data for taxonomic and evolutionary studies.
Scientific and Collecting Importance
Metiococeras geslinianum serves as a biostratigraphic marker fossil for the Lower Turonian. Its presence enables geologists to correlate rock layers across Europe and beyond, making it a vital tool in stratigraphy.
For collectors, this ammonite is both rare and desirable. Its strong ribbing and tuberculation create an impressive display piece, while its scientific value ensures that it holds an important place in any collection of Cretaceous fossils.
Display and Educational Value
Owning a Metiococeras geslinianum fossil ammonite from Chers, France provides not only a fascinating collector’s item but also a piece of Earth’s history. Its striking morphology and excellent preservation make it an eye-catching addition to any display.
- For collectors: A rare ammonite from a classic Turonian locality.
- For educators and students: An invaluable teaching specimen for Cretaceous ammonite morphology, paleoecology, and stratigraphy.
- For display: A natural piece of art formed over 90 million years ago, perfect for homes, offices, or museums.
Every specimen is guaranteed authentic and comes with a Certificate of Authenticity, ensuring both its scientific and collectible value.
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