Dumortieria levesquei Ammonite Fossil Jurassic UK Genuine COA Card - Toarcian Junction Bed Warwickfield Collector Specimen
£ 10.20
Dumortieria levesquei Ammonite Fossil from Warwickfield, UKThis is a genuine Dumortieria levesquei ammonite fossil from the Junction Bed,
dating to the Toarcian stage of the Lower Jurassic, collected from Warwickfield, UK. This carefully chosen fossil is a desirable British Jurassic marine specimen, selected for its natural character, scientific interest, and display appeal. It is supplied with a Certificate of Authenticity lifetime guarantee generic card, making it a trusted addition to an ammonite collection, fossil cabinet, educational geology display, natural history collection, or prehistoric gift selection.The photograph shows the actual fossil specimen you will receive. Full sizing and scale can be seen in the photo.Geological Age and FormationThis ammonite dates to the Toarcian stage of the Lower Jurassic, approximately 182 million years old. The Toarcian is one of the most important intervals for Jurassic ammonite fossils, with many distinctive genera used by geologists to date and correlate marine rock layers across Britain and Europe. Ammonites evolved rapidly during this period, making them excellent index fossils and highly collectable scientific specimens.The fossil is from the Junction Bed, a fossiliferous horizon associated with Lower Jurassic marine sedimentation. These beds represent ancient seabed deposits formed when much of Britain was covered by shallow to moderately deep seas. Fine sediment, carbonate material, and organic-rich layers accumulated on the sea floor, preserving the remains of ammonites, belemnites, bivalves, brachiopods, gastropods, crinoids, fish, and other marine organisms.Fossil Type and SpeciesThis specimen is identified as Dumortieria levesquei, an extinct ammonite species from the Lower Jurassic. Dumortieria is a well-known Toarcian ammonite genus and belongs to the ammonoid cephalopods, a group of marine molluscs related to modern squid, cuttlefish, octopus, and nautilus.Ammonites possessed coiled, chambered shells. The living animal occupied the outer body chamber, while earlier internal chambers helped control buoyancy. This allowed the ammonite to move through the water column while maintaining stability. Their shells were divided by internal walls known as septa, and the contact lines between these septa and the shell wall formed suture patterns that are important in ammonite identification.Morphology and Notable FeaturesDumortieria ammonites are prized by collectors for their classic Jurassic form and attractive shell ornament. They typically display a planispiral coiled shell, visible whorls, and ribbing that records the animal’s growth. The whorls may show a balanced, open-coiled appearance with an umbilicus at the centre, creating the iconic spiral shape that makes ammonites one of the most recognisable fossil types.The ribbing on Dumortieria specimens can give the fossil a strong visual texture, with ribs crossing the flanks of the shell and helping define the whorl shape. These features make the fossil suitable for both scientific interest and natural display. Depending on preservation, the specimen may show natural matrix, fossil shell surface, mineralisation, colour variation, weathering, small chips, or areas of wear. These are normal features of a genuine fossil and form part of the specimen’s unique geological history.The photo shows the exact fossil being offered, so the buyer can view the condition, shape, preservation, size, and display quality before purchase.Lower Jurassic Marine EnvironmentThis Dumortieria levesquei ammonite lived in a Jurassic sea that covered parts of Britain during the Toarcian. These ancient marine environments supported a rich ecosystem of swimming cephalopods, shelled invertebrates, fish, and early marine reptiles. Ammonites were active swimming or drifting animals, likely feeding on small prey in the water column using tentacles.After death, the ammonite shell settled onto the seabed, where it could become buried by sediment. Over millions of years, compaction, mineralisation, and geological change transformed the remains into a fossil. Specimens from Toarcian marine beds are especially valued because they connect directly to a well-studied and fossil-rich period of British Jurassic history.Authenticity and CollectabilityThis Dumortieria levesquei ammonite fossil is a genuine specimen from Warwickfield, UK, and includes a Certificate of Authenticity lifetime guarantee generic card. It is suitable for collectors of British fossils, Jurassic fossils, ammonites, Lower Jurassic marine fossils, natural history specimens, and educational geology displays.The fossil shown in the photo is the actual specimen you will receive.
dating to the Toarcian stage of the Lower Jurassic, collected from Warwickfield, UK. This carefully chosen fossil is a desirable British Jurassic marine specimen, selected for its natural character, scientific interest, and display appeal. It is supplied with a Certificate of Authenticity lifetime guarantee generic card, making it a trusted addition to an ammonite collection, fossil cabinet, educational geology display, natural history collection, or prehistoric gift selection.The photograph shows the actual fossil specimen you will receive. Full sizing and scale can be seen in the photo.Geological Age and FormationThis ammonite dates to the Toarcian stage of the Lower Jurassic, approximately 182 million years old. The Toarcian is one of the most important intervals for Jurassic ammonite fossils, with many distinctive genera used by geologists to date and correlate marine rock layers across Britain and Europe. Ammonites evolved rapidly during this period, making them excellent index fossils and highly collectable scientific specimens.The fossil is from the Junction Bed, a fossiliferous horizon associated with Lower Jurassic marine sedimentation. These beds represent ancient seabed deposits formed when much of Britain was covered by shallow to moderately deep seas. Fine sediment, carbonate material, and organic-rich layers accumulated on the sea floor, preserving the remains of ammonites, belemnites, bivalves, brachiopods, gastropods, crinoids, fish, and other marine organisms.Fossil Type and SpeciesThis specimen is identified as Dumortieria levesquei, an extinct ammonite species from the Lower Jurassic. Dumortieria is a well-known Toarcian ammonite genus and belongs to the ammonoid cephalopods, a group of marine molluscs related to modern squid, cuttlefish, octopus, and nautilus.Ammonites possessed coiled, chambered shells. The living animal occupied the outer body chamber, while earlier internal chambers helped control buoyancy. This allowed the ammonite to move through the water column while maintaining stability. Their shells were divided by internal walls known as septa, and the contact lines between these septa and the shell wall formed suture patterns that are important in ammonite identification.Morphology and Notable FeaturesDumortieria ammonites are prized by collectors for their classic Jurassic form and attractive shell ornament. They typically display a planispiral coiled shell, visible whorls, and ribbing that records the animal’s growth. The whorls may show a balanced, open-coiled appearance with an umbilicus at the centre, creating the iconic spiral shape that makes ammonites one of the most recognisable fossil types.The ribbing on Dumortieria specimens can give the fossil a strong visual texture, with ribs crossing the flanks of the shell and helping define the whorl shape. These features make the fossil suitable for both scientific interest and natural display. Depending on preservation, the specimen may show natural matrix, fossil shell surface, mineralisation, colour variation, weathering, small chips, or areas of wear. These are normal features of a genuine fossil and form part of the specimen’s unique geological history.The photo shows the exact fossil being offered, so the buyer can view the condition, shape, preservation, size, and display quality before purchase.Lower Jurassic Marine EnvironmentThis Dumortieria levesquei ammonite lived in a Jurassic sea that covered parts of Britain during the Toarcian. These ancient marine environments supported a rich ecosystem of swimming cephalopods, shelled invertebrates, fish, and early marine reptiles. Ammonites were active swimming or drifting animals, likely feeding on small prey in the water column using tentacles.After death, the ammonite shell settled onto the seabed, where it could become buried by sediment. Over millions of years, compaction, mineralisation, and geological change transformed the remains into a fossil. Specimens from Toarcian marine beds are especially valued because they connect directly to a well-studied and fossil-rich period of British Jurassic history.Authenticity and CollectabilityThis Dumortieria levesquei ammonite fossil is a genuine specimen from Warwickfield, UK, and includes a Certificate of Authenticity lifetime guarantee generic card. It is suitable for collectors of British fossils, Jurassic fossils, ammonites, Lower Jurassic marine fossils, natural history specimens, and educational geology displays.The fossil shown in the photo is the actual specimen you will receive.
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