Calycoceras asiaticum Ammonite Fossil Cretaceous UK Genuine COA Card Specimen - Middle Cenomanian Eastbourne Chalk Fossil
£ 36.00
Calycoceras asiaticum Ammonite Fossil from Eastbourne, East SussexThis is a genuine Calycoceras asiaticum ammonite fossil from the Cretaceous,
Middle Cenomanian, collected from Eastbourne, East Sussex, UK. It is associated with the Acanthoceras rhotomagense Zone, a classic Middle Cenomanian ammonite biozone used for dating and correlating Cretaceous marine deposits. This carefully chosen fossil is a desirable British chalk ammonite specimen, selected for its natural form, geological interest, and collectable display appeal.This fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The photograph shows the actual fossil specimen you will receive, allowing the buyer to view the preservation, colour, condition, size, and display quality before purchase. Full sizing and scale can be seen in the photo.Geological Age and StratigraphyThis ammonite dates to the Middle Cenomanian stage of the Upper Cretaceous, approximately 96 million years old. The Cenomanian was a time of very high sea levels, warm global climates, and widespread marine conditions across Europe. Much of southern Britain was submerged beneath a warm chalk sea, where fine carbonate sediment accumulated on the seabed over long periods of time.The fossil is from the Acanthoceras rhotomagense Zone, an important Middle Cenomanian ammonite zone. Ammonite biozones are especially valuable in geology because ammonites evolved rapidly and had broad marine distribution, allowing specific fossil species and groups to help date rock layers with precision. This makes the specimen not only attractive to collectors but also scientifically interesting as part of the wider Cretaceous fossil record of southern England.Location: Eastbourne, East SussexThis specimen was collected from Eastbourne, East Sussex, an area famous for its Cretaceous chalk cliffs and coastal geology. The East Sussex chalk succession records ancient marine conditions that existed long before the modern English Channel coastline formed. These chalk deposits preserve evidence of the ancient sea floor, including ammonites, bivalves, echinoids, sponges, fish remains, and other marine fossils.The Eastbourne area is part of one of Britain’s most iconic Cretaceous landscapes. Fossils from this locality are sought after by collectors because they combine classic British provenance, strong geological context, and a direct connection to the ancient chalk seas of the Late Cretaceous.Fossil Type and SpeciesThis fossil is identified as Calycoceras asiaticum, an extinct ammonite species. Calycoceras belongs to the family Acanthoceratidae, a group of Upper Cretaceous ammonites known for strongly ornamented shells with prominent ribs and tubercles. Acanthoceratid ammonites are particularly important in Cenomanian biostratigraphy and are widely recognised in Cretaceous marine deposits around the world.Ammonites were extinct marine molluscs related to modern squid, cuttlefish, octopus, and nautilus. They had coiled external shells divided internally into chambers. The living animal occupied the outer body chamber, while earlier chambers helped regulate buoyancy, allowing the ammonite to move through the water column. Their distinctive shells make them among the most recognisable fossils from the age of dinosaurs.Morphology and Notable FeaturesCalycoceras asiaticum is known for its robust Cretaceous ammonite form. The shell is typically coiled, moderately involute to evolute depending on growth stage, and strongly ornamented. Key features associated with this species include pronounced ribs and tuberculation, giving the fossil a bold, textured appearance. These raised tubercles and ribs helped strengthen the shell and are part of what makes acanthoceratid ammonites visually striking.The shell structure records the animal’s growth through life, with each whorl representing a later stage of development. Internal chamber walls, known as septa, divided the shell, while suture lines formed where these walls met the outer shell. These features are important in ammonite classification and add scientific value to the specimen.As a genuine fossil, this piece may show natural chalk matrix, fossil shell texture, mineral staining, surface wear, colour variation, small chips, cracks, or areas of natural loss caused by fossilisation and geological history. These features are normal for authentic fossils and add to the individuality of the piece.Cretaceous Marine EnvironmentThis Calycoceras asiaticum ammonite lived in the warm Middle Cenomanian seas that covered southern Britain. These marine environments supported a diverse ecosystem of ammonites, bivalves, brachiopods, echinoids, sponges, fish, and marine reptiles. Ammonites were active swimming or drifting cephalopods, likely feeding on small prey in the water column using tentacles.After death, the ammonite shell could settle onto the seabed and become buried in soft carbonate sediment. Over millions of years, compaction, mineralisation, and geological change transformed the remains into a fossil preserved within the chalk succession. This specimen is a direct link to the ancient Cretaceous seas of East Sussex, when dinosaurs lived on land and ammonites flourished in the oceans.Authenticity and CollectabilityThis Calycoceras asiaticum ammonite fossil is a genuine specimen from Eastbourne, East Sussex, UK, dating to the Middle Cenomanian of the Cretaceous within the Acanthoceras rhotomagense Zone. It is suitable for collectors of British fossils, East Sussex fossils, Cretaceous ammonites, chalk fossils, marine cephalopods, natural history specimens, educational geology pieces, and display fossils.This carefully selected fossil includes a Certificate of Authenticity lifetime guarantee generic card, and the fossil shown in the photo is the actual specimen you will receive.
Middle Cenomanian, collected from Eastbourne, East Sussex, UK. It is associated with the Acanthoceras rhotomagense Zone, a classic Middle Cenomanian ammonite biozone used for dating and correlating Cretaceous marine deposits. This carefully chosen fossil is a desirable British chalk ammonite specimen, selected for its natural form, geological interest, and collectable display appeal.This fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The photograph shows the actual fossil specimen you will receive, allowing the buyer to view the preservation, colour, condition, size, and display quality before purchase. Full sizing and scale can be seen in the photo.Geological Age and StratigraphyThis ammonite dates to the Middle Cenomanian stage of the Upper Cretaceous, approximately 96 million years old. The Cenomanian was a time of very high sea levels, warm global climates, and widespread marine conditions across Europe. Much of southern Britain was submerged beneath a warm chalk sea, where fine carbonate sediment accumulated on the seabed over long periods of time.The fossil is from the Acanthoceras rhotomagense Zone, an important Middle Cenomanian ammonite zone. Ammonite biozones are especially valuable in geology because ammonites evolved rapidly and had broad marine distribution, allowing specific fossil species and groups to help date rock layers with precision. This makes the specimen not only attractive to collectors but also scientifically interesting as part of the wider Cretaceous fossil record of southern England.Location: Eastbourne, East SussexThis specimen was collected from Eastbourne, East Sussex, an area famous for its Cretaceous chalk cliffs and coastal geology. The East Sussex chalk succession records ancient marine conditions that existed long before the modern English Channel coastline formed. These chalk deposits preserve evidence of the ancient sea floor, including ammonites, bivalves, echinoids, sponges, fish remains, and other marine fossils.The Eastbourne area is part of one of Britain’s most iconic Cretaceous landscapes. Fossils from this locality are sought after by collectors because they combine classic British provenance, strong geological context, and a direct connection to the ancient chalk seas of the Late Cretaceous.Fossil Type and SpeciesThis fossil is identified as Calycoceras asiaticum, an extinct ammonite species. Calycoceras belongs to the family Acanthoceratidae, a group of Upper Cretaceous ammonites known for strongly ornamented shells with prominent ribs and tubercles. Acanthoceratid ammonites are particularly important in Cenomanian biostratigraphy and are widely recognised in Cretaceous marine deposits around the world.Ammonites were extinct marine molluscs related to modern squid, cuttlefish, octopus, and nautilus. They had coiled external shells divided internally into chambers. The living animal occupied the outer body chamber, while earlier chambers helped regulate buoyancy, allowing the ammonite to move through the water column. Their distinctive shells make them among the most recognisable fossils from the age of dinosaurs.Morphology and Notable FeaturesCalycoceras asiaticum is known for its robust Cretaceous ammonite form. The shell is typically coiled, moderately involute to evolute depending on growth stage, and strongly ornamented. Key features associated with this species include pronounced ribs and tuberculation, giving the fossil a bold, textured appearance. These raised tubercles and ribs helped strengthen the shell and are part of what makes acanthoceratid ammonites visually striking.The shell structure records the animal’s growth through life, with each whorl representing a later stage of development. Internal chamber walls, known as septa, divided the shell, while suture lines formed where these walls met the outer shell. These features are important in ammonite classification and add scientific value to the specimen.As a genuine fossil, this piece may show natural chalk matrix, fossil shell texture, mineral staining, surface wear, colour variation, small chips, cracks, or areas of natural loss caused by fossilisation and geological history. These features are normal for authentic fossils and add to the individuality of the piece.Cretaceous Marine EnvironmentThis Calycoceras asiaticum ammonite lived in the warm Middle Cenomanian seas that covered southern Britain. These marine environments supported a diverse ecosystem of ammonites, bivalves, brachiopods, echinoids, sponges, fish, and marine reptiles. Ammonites were active swimming or drifting cephalopods, likely feeding on small prey in the water column using tentacles.After death, the ammonite shell could settle onto the seabed and become buried in soft carbonate sediment. Over millions of years, compaction, mineralisation, and geological change transformed the remains into a fossil preserved within the chalk succession. This specimen is a direct link to the ancient Cretaceous seas of East Sussex, when dinosaurs lived on land and ammonites flourished in the oceans.Authenticity and CollectabilityThis Calycoceras asiaticum ammonite fossil is a genuine specimen from Eastbourne, East Sussex, UK, dating to the Middle Cenomanian of the Cretaceous within the Acanthoceras rhotomagense Zone. It is suitable for collectors of British fossils, East Sussex fossils, Cretaceous ammonites, chalk fossils, marine cephalopods, natural history specimens, educational geology pieces, and display fossils.This carefully selected fossil includes a Certificate of Authenticity lifetime guarantee generic card, and the fossil shown in the photo is the actual specimen you will receive.
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