Description
Genuine Mantelliceras couloni Ammonite Fossil
This genuine Mantelliceras couloni ammonite fossil comes from the Lower Cenomanian of Sarthe, France. It is a carefully selected Cretaceous marine fossil specimen from one of the classic ammonite-bearing intervals of western Europe. Ammonites were extinct marine cephalopods, related to modern squid, octopus and nautilus, and are among the most important fossils for understanding the age, environment and correlation of Mesozoic marine rocks.
This fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card. Full sizing can be seen in the photo. The fossil shown is the actual carefully chosen specimen you will receive, making it ideal for collectors who appreciate natural, individual fossils with accurate locality and age information.
Lower Cenomanian Cretaceous Geology
The Cenomanian Stage marks the beginning of the Late Cretaceous Epoch and dates to approximately 100.5 to 93.9 million years ago. This specimen is from the Lower Cenomanian, the earlier part of that stage, when much of western Europe was covered by warm, shallow epicontinental seas. These marine environments supported a rich and varied fauna including ammonites, bivalves, gastropods, echinoids, sponges, corals, crustaceans and fish.
Sarthe, in north-western France, is well known for Cretaceous marine sediments that preserve fossils from these ancient sea-floor environments. During the Lower Cenomanian, the region formed part of a broad marine basin connected to wider European seas. Sediments deposited in these waters could include calcareous sands, marls, limestones and fossil-rich horizons, reflecting changing sea levels, water depth and carbonate-rich marine conditions.
Mantelliceras couloni Species Detail
Mantelliceras couloni is a Cretaceous ammonite species associated with the Lower Cenomanian and belongs to a group of strongly ornamented ammonites that are important in biostratigraphy. Species of Mantelliceras are commonly used to help identify and correlate Lower Cenomanian rock layers, making them valuable fossils not only for display but also for geological interpretation.
The genus Mantelliceras is placed within the order Ammonitida and is associated with the family Acanthoceratidae, a major group of Cretaceous ammonites recognised for their prominent ribbing, tubercles and often robust shell ornament. The species name couloni originates from early scientific work on Cretaceous ammonites and is historically associated with the French palaeontologist Alcide d’Orbigny, who described many important fossil molluscs during the nineteenth century.
Ammonite Morphology and Features
Mantelliceras ammonites are typically recognised by their coiled, chambered shells and distinctive ornamentation. The shell often displays strong ribs that sweep across the whorls, with tubercles or raised nodes that may be visible depending on preservation. These features helped strengthen the shell and are important characteristics used by palaeontologists when identifying species and comparing related ammonites.
Like all ammonites, Mantelliceras couloni had a shell divided internally into chambers. The living animal occupied the final body chamber, while the earlier chambers helped regulate buoyancy in the water column. The intricate suture lines, formed where the internal chamber walls met the outer shell, are a key feature of ammonites and one reason they are so highly studied by fossil specialists.
Natural preservation varies from specimen to specimen. Some examples may show clear ribbing and whorl shape, while others may preserve as internal moulds with partial shell detail. These natural variations give each fossil its own character and reflect the conditions under which it was buried, mineralised and preserved over millions of years.
Ancient Cretaceous Marine Environment
This ammonite lived in a warm Cretaceous sea during a time of high global sea levels. Mantelliceras couloni would have formed part of a complex marine ecosystem, moving through the water as an active cephalopod predator or scavenger. It shared its environment with many other marine invertebrates and vertebrates, including shellfish, echinoids, fish and other ammonite species.
The Lower Cenomanian seas of France were dynamic habitats influenced by changes in sediment supply, oxygen levels, sea level and marine circulation. Fossils from these deposits provide a direct link to those vanished ecosystems, preserving evidence of life in the ancient oceans long before the modern landscape of France existed.
Collectable Cretaceous Ammonite from France
This Mantelliceras couloni ammonite fossil is an excellent addition to any collection of Cretaceous fossils, French fossils, ammonites, marine invertebrates or geological display specimens. Its Lower Cenomanian age, Sarthe locality and attractive ammonite form make it a desirable piece for collectors, educational use, natural history displays and anyone interested in ancient marine life.
Supplied with a Certificate of Authenticity lifetime guarantee generic card, this genuine Mantelliceras couloni ammonite from Sarthe, France, offers a collectable example of a scientifically important Cretaceous fossil from the warm marine seas of the Lower Cenomanian.
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