Barroisiceras Ammonite Fossil Cretaceous Turonian Madagascar Genuine COA Rare Collector Display Specimen Certificate
£ 24.00
GENUINE BARROISICERAS SP. AMMONITE FOSSIL FROM MADAGASCARThis listing is for a genuine Barroisiceras sp. ammonite fossil from the Upper
Cretaceous, Turonian deposits of Belo sur Tsiribihina, Menabe, Madagascar. This is a carefully chosen fossil specimen, selected for its natural prehistoric interest, collectable value, and attractive display appeal. The photograph shows the actual fossil you will receive, allowing you to view the individual shape, colour, preservation, texture, and natural character of the specimen before purchase.This fossil includes a Certificate of Authenticity lifetime guarantee generic card, confirming that it is a genuine fossil specimen and not a modern replica. Full sizing information can be seen in the listing photograph. FOSSIL TYPE AND SPECIESBarroisiceras sp. is an ammonite, an extinct marine cephalopod that lived during the Late Cretaceous Period. Ammonites were related to modern squid, cuttlefish, octopus, and nautilus, and they are among the most recognisable fossils found in marine sedimentary rocks. Their coiled shells, chambered internal structure, and wide distribution across ancient seas make them highly valued by fossil collectors, educators, and geologists.The “sp.” designation means this specimen has been identified to genus level as Barroisiceras, while the exact species has not been assigned. Barroisiceras is associated with the ammonoid order Ammonitida and the family Barroisiceratidae, a group of Cretaceous ammonites known for distinctive shell forms and strong importance in Late Cretaceous marine faunas. As a named genus from a desirable Madagascan locality, this fossil has excellent appeal for collectors of genuine ammonites and prehistoric marine life. GEOLOGICAL AGE AND TURONIAN SETTINGThis fossil dates from the Turonian stage of the Upper Cretaceous, making it approximately 90 to 94 million years old. The Turonian was a time of high global sea levels and widespread warm marine environments. Large areas of the world were covered by shallow seas, creating ideal habitats for ammonites, belemnites, bivalves, gastropods, echinoids, fish, sharks, marine reptiles, and many other prehistoric sea creatures.The fossil comes from Belo sur Tsiribihina in the Menabe region of Madagascar, an area known for important Cretaceous marine fossils. During the Late Cretaceous, Madagascar was influenced by ancient marine shelf environments where ammonites lived, died, and became buried in sediment on the sea floor. Over millions of years, the original shell material and surrounding sediment were altered by geological processes, preserving these remarkable remains as fossils. MORPHOLOGY AND NATURAL FEATURESAmmonites such as Barroisiceras had a planispiral shell, meaning the shell coiled in a flat spiral. The shell was divided internally into chambers, with the living animal occupying the final outer chamber. Earlier chambers helped regulate buoyancy, allowing the ammonite to move through the water column while searching for food and avoiding predators.Depending on preservation, Barroisiceras ammonites may show whorl shape, ribbing, growth lines, shell curvature, suture patterns, natural surface texture, and other features connected to the original shell structure. These details make ammonites especially popular with collectors, as each specimen records the growth pattern and life history of an individual animal from an ancient sea. COLLECTOR APPEAL AND DISPLAY VALUEThis Barroisiceras sp. ammonite fossil from Madagascar is ideal for collectors interested in Cretaceous ammonites, Madagascan fossils, marine cephalopods, prehistoric sea life, natural history specimens, and genuine fossils with certificates. Its Turonian age places it within a fascinating interval of the Late Cretaceous, long after the classic Jurassic ammonites but before the final extinction of ammonites at the end of the Cretaceous Period.The fossil would make an excellent addition to a fossil cabinet, educational geology collection, classroom display, natural history exhibit, or decorative curiosity collection. It is also a thoughtful gift for fossil enthusiasts, students, teachers, and anyone interested in Earth history and ancient marine life. AUTHENTICITY AND SPECIMEN INFORMATIONYou will receive the actual Barroisiceras sp. ammonite fossil shown in the photograph, not a stock image or random example. Please see the photo for full sizing and visual condition.This genuine fossil is supplied with a Certificate of Authenticity lifetime guarantee generic card, making it a reliable and collectable specimen for anyone seeking a real Upper Cretaceous Turonian ammonite from Madagascar with strong natural history interest, educational value, and attractive display potential.
Cretaceous, Turonian deposits of Belo sur Tsiribihina, Menabe, Madagascar. This is a carefully chosen fossil specimen, selected for its natural prehistoric interest, collectable value, and attractive display appeal. The photograph shows the actual fossil you will receive, allowing you to view the individual shape, colour, preservation, texture, and natural character of the specimen before purchase.This fossil includes a Certificate of Authenticity lifetime guarantee generic card, confirming that it is a genuine fossil specimen and not a modern replica. Full sizing information can be seen in the listing photograph. FOSSIL TYPE AND SPECIESBarroisiceras sp. is an ammonite, an extinct marine cephalopod that lived during the Late Cretaceous Period. Ammonites were related to modern squid, cuttlefish, octopus, and nautilus, and they are among the most recognisable fossils found in marine sedimentary rocks. Their coiled shells, chambered internal structure, and wide distribution across ancient seas make them highly valued by fossil collectors, educators, and geologists.The “sp.” designation means this specimen has been identified to genus level as Barroisiceras, while the exact species has not been assigned. Barroisiceras is associated with the ammonoid order Ammonitida and the family Barroisiceratidae, a group of Cretaceous ammonites known for distinctive shell forms and strong importance in Late Cretaceous marine faunas. As a named genus from a desirable Madagascan locality, this fossil has excellent appeal for collectors of genuine ammonites and prehistoric marine life. GEOLOGICAL AGE AND TURONIAN SETTINGThis fossil dates from the Turonian stage of the Upper Cretaceous, making it approximately 90 to 94 million years old. The Turonian was a time of high global sea levels and widespread warm marine environments. Large areas of the world were covered by shallow seas, creating ideal habitats for ammonites, belemnites, bivalves, gastropods, echinoids, fish, sharks, marine reptiles, and many other prehistoric sea creatures.The fossil comes from Belo sur Tsiribihina in the Menabe region of Madagascar, an area known for important Cretaceous marine fossils. During the Late Cretaceous, Madagascar was influenced by ancient marine shelf environments where ammonites lived, died, and became buried in sediment on the sea floor. Over millions of years, the original shell material and surrounding sediment were altered by geological processes, preserving these remarkable remains as fossils. MORPHOLOGY AND NATURAL FEATURESAmmonites such as Barroisiceras had a planispiral shell, meaning the shell coiled in a flat spiral. The shell was divided internally into chambers, with the living animal occupying the final outer chamber. Earlier chambers helped regulate buoyancy, allowing the ammonite to move through the water column while searching for food and avoiding predators.Depending on preservation, Barroisiceras ammonites may show whorl shape, ribbing, growth lines, shell curvature, suture patterns, natural surface texture, and other features connected to the original shell structure. These details make ammonites especially popular with collectors, as each specimen records the growth pattern and life history of an individual animal from an ancient sea. COLLECTOR APPEAL AND DISPLAY VALUEThis Barroisiceras sp. ammonite fossil from Madagascar is ideal for collectors interested in Cretaceous ammonites, Madagascan fossils, marine cephalopods, prehistoric sea life, natural history specimens, and genuine fossils with certificates. Its Turonian age places it within a fascinating interval of the Late Cretaceous, long after the classic Jurassic ammonites but before the final extinction of ammonites at the end of the Cretaceous Period.The fossil would make an excellent addition to a fossil cabinet, educational geology collection, classroom display, natural history exhibit, or decorative curiosity collection. It is also a thoughtful gift for fossil enthusiasts, students, teachers, and anyone interested in Earth history and ancient marine life. AUTHENTICITY AND SPECIMEN INFORMATIONYou will receive the actual Barroisiceras sp. ammonite fossil shown in the photograph, not a stock image or random example. Please see the photo for full sizing and visual condition.This genuine fossil is supplied with a Certificate of Authenticity lifetime guarantee generic card, making it a reliable and collectable specimen for anyone seeking a real Upper Cretaceous Turonian ammonite from Madagascar with strong natural history interest, educational value, and attractive display potential.
