Stephanoceras densus Ammonite Fossil Bajocian Dorset UK Genuine Jurassic COA Red Hole Lane Sherborne Inferior Oolite Specimen
£ 36.00
GENUINE STEPHANOCERAS DENSUS AMMONITE FOSSILThis is a genuine Stephanoceras densus ammonite fossil from the Inferior Oolite
Formation, Middle Jurassic, Bajocian Stage, Blagdeni Subzone, collected from Red Hole Lane, Sherborne, Dorset, UK. This carefully chosen fossil specimen is an excellent piece for collectors of British ammonites, Jurassic fossils, Dorset fossils, extinct cephalopods, natural history specimens, and well-labelled geological display fossils.The photograph shows the actual fossil you will receive, allowing you to view the individual preservation, shell form, colour, surface detail, matrix, and natural character of this specific specimen before purchase. Full sizing details can be seen in the photo. This fossil includes a Certificate of Authenticity lifetime guarantee generic card, confirming it as a genuine specimen. FOSSIL TYPE, SPECIES AND SCIENTIFIC CLASSIFICATIONStephanoceras densus is an ammonite, an extinct marine cephalopod belonging to the order Ammonitida. Ammonites were related to modern squid, cuttlefish, octopus, and nautilus, and are among the most recognisable fossils of the Jurassic Period. Their coiled shells, varied ornamentation, and rapid evolutionary changes make them highly valued by fossil collectors and important in palaeontology.This specimen belongs to the genus Stephanoceras and the species Stephanoceras densus. Stephanoceras is associated with the family Stephanoceratidae, a well-known Middle Jurassic ammonite family often recognised for robust shell forms, rounded whorls, strong ribbing, and distinctive sculptural appearance. Stephanoceratid ammonites are especially important in Bajocian biostratigraphy because their changing forms help geologists compare and date marine sedimentary rock layers. GEOLOGICAL AGE, FORMATION AND SUBZONEThis fossil comes from the Inferior Oolite Formation, a classic British Middle Jurassic rock unit famous for fossiliferous limestones, sandy limestones, iron-rich beds, and a rich marine fossil assemblage. The specimen dates to the Bajocian Stage of the Middle Jurassic, approximately 170 to 168 million years ago.It is associated with the Blagdeni Subzone, a recognised ammonite-based biostratigraphic interval within the Bajocian. Ammonite zones and subzones are extremely useful in Jurassic geology because ammonites evolved quickly and were widely distributed across ancient seas. This gives labelled specimens such as Stephanoceras densus strong scientific and collecting appeal, linking the fossil to a more precise interval of geological time. RED HOLE LANE, SHERBORNE, DORSET LOCALITYThis specimen was collected from Red Hole Lane, Sherborne, Dorset, UK, a locality connected with the fossil-bearing Inferior Oolite deposits of southern England. Dorset is one of Britain’s most famous fossil-producing counties, with a long history of geological study and fossil collecting. While the Jurassic Coast is especially well known, inland Dorset localities also preserve important Middle Jurassic marine fossils.During the Bajocian, this part of Britain lay beneath warm, shallow marine waters. These ancient seas supported ammonites, belemnites, bivalves, brachiopods, gastropods, echinoids, corals, and other invertebrates. Ammonites such as Stephanoceras densus lived as active swimming cephalopods, moving through the water column before their shells eventually settled onto the sea floor after death.Burial in carbonate-rich sediment helped preserve some shells over millions of years. Mineralisation, compaction, and natural geological alteration gradually transformed these remains into fossils within the Inferior Oolite Formation. AMMONITE MORPHOLOGY AND NATURAL FEATURESStephanoceras densus displays the classic planispiral ammonite shell form, with the shell coiled in a flat spiral. Stephanoceratid ammonites are often admired for their compact, rounded whorls and bold ribbing, giving them a strong three-dimensional appearance. Depending on preservation, the fossil may show rib detail, whorl shape, shell ornamentation, mineral staining, matrix attachment, natural wear, or fossilisation texture.The shell of an ammonite was divided into internal chambers, with the living animal occupying the outer body chamber. These chambers helped regulate buoyancy in the water column, while the outer shell shape and ribbing are key features used in ammonite identification. Natural details such as small fractures, sedimentary contact marks, weathered areas, colour variation, matrix, and mineral deposits are part of the fossil’s geological history and add individuality to the specimen. COLLECTING, DISPLAY AND EDUCATIONAL INTERESTThis Stephanoceras densus ammonite fossil is ideal for display in a fossil cabinet, study, classroom, office, collection drawer, natural history arrangement, or British Jurassic fossil collection. Its named species identification, Inferior Oolite Formation origin, Bajocian age, Blagdeni Subzone association, and Red Hole Lane locality give it strong collecting value.It is suitable for collectors interested in Dorset fossils, British ammonites, Jurassic marine life, extinct cephalopods, palaeontology, geology, and educational fossil specimens. The natural coiled form gives the fossil classic visual appeal, while the detailed geological information adds scientific interest and makes it a meaningful specimen from the ancient seas of Jurassic Britain. AUTHENTICITY AND SPECIMEN DETAILSThis is a genuine Stephanoceras densus ammonite fossil from the Inferior Oolite Formation, Middle Jurassic, Bajocian Stage, Blagdeni Subzone, Red Hole Lane, Sherborne, Dorset, UK. It includes a Certificate of Authenticity lifetime guarantee generic card. The photo shows the actual fossil you will receive, and full sizing information can be seen in the photo
Formation, Middle Jurassic, Bajocian Stage, Blagdeni Subzone, collected from Red Hole Lane, Sherborne, Dorset, UK. This carefully chosen fossil specimen is an excellent piece for collectors of British ammonites, Jurassic fossils, Dorset fossils, extinct cephalopods, natural history specimens, and well-labelled geological display fossils.The photograph shows the actual fossil you will receive, allowing you to view the individual preservation, shell form, colour, surface detail, matrix, and natural character of this specific specimen before purchase. Full sizing details can be seen in the photo. This fossil includes a Certificate of Authenticity lifetime guarantee generic card, confirming it as a genuine specimen. FOSSIL TYPE, SPECIES AND SCIENTIFIC CLASSIFICATIONStephanoceras densus is an ammonite, an extinct marine cephalopod belonging to the order Ammonitida. Ammonites were related to modern squid, cuttlefish, octopus, and nautilus, and are among the most recognisable fossils of the Jurassic Period. Their coiled shells, varied ornamentation, and rapid evolutionary changes make them highly valued by fossil collectors and important in palaeontology.This specimen belongs to the genus Stephanoceras and the species Stephanoceras densus. Stephanoceras is associated with the family Stephanoceratidae, a well-known Middle Jurassic ammonite family often recognised for robust shell forms, rounded whorls, strong ribbing, and distinctive sculptural appearance. Stephanoceratid ammonites are especially important in Bajocian biostratigraphy because their changing forms help geologists compare and date marine sedimentary rock layers. GEOLOGICAL AGE, FORMATION AND SUBZONEThis fossil comes from the Inferior Oolite Formation, a classic British Middle Jurassic rock unit famous for fossiliferous limestones, sandy limestones, iron-rich beds, and a rich marine fossil assemblage. The specimen dates to the Bajocian Stage of the Middle Jurassic, approximately 170 to 168 million years ago.It is associated with the Blagdeni Subzone, a recognised ammonite-based biostratigraphic interval within the Bajocian. Ammonite zones and subzones are extremely useful in Jurassic geology because ammonites evolved quickly and were widely distributed across ancient seas. This gives labelled specimens such as Stephanoceras densus strong scientific and collecting appeal, linking the fossil to a more precise interval of geological time. RED HOLE LANE, SHERBORNE, DORSET LOCALITYThis specimen was collected from Red Hole Lane, Sherborne, Dorset, UK, a locality connected with the fossil-bearing Inferior Oolite deposits of southern England. Dorset is one of Britain’s most famous fossil-producing counties, with a long history of geological study and fossil collecting. While the Jurassic Coast is especially well known, inland Dorset localities also preserve important Middle Jurassic marine fossils.During the Bajocian, this part of Britain lay beneath warm, shallow marine waters. These ancient seas supported ammonites, belemnites, bivalves, brachiopods, gastropods, echinoids, corals, and other invertebrates. Ammonites such as Stephanoceras densus lived as active swimming cephalopods, moving through the water column before their shells eventually settled onto the sea floor after death.Burial in carbonate-rich sediment helped preserve some shells over millions of years. Mineralisation, compaction, and natural geological alteration gradually transformed these remains into fossils within the Inferior Oolite Formation. AMMONITE MORPHOLOGY AND NATURAL FEATURESStephanoceras densus displays the classic planispiral ammonite shell form, with the shell coiled in a flat spiral. Stephanoceratid ammonites are often admired for their compact, rounded whorls and bold ribbing, giving them a strong three-dimensional appearance. Depending on preservation, the fossil may show rib detail, whorl shape, shell ornamentation, mineral staining, matrix attachment, natural wear, or fossilisation texture.The shell of an ammonite was divided into internal chambers, with the living animal occupying the outer body chamber. These chambers helped regulate buoyancy in the water column, while the outer shell shape and ribbing are key features used in ammonite identification. Natural details such as small fractures, sedimentary contact marks, weathered areas, colour variation, matrix, and mineral deposits are part of the fossil’s geological history and add individuality to the specimen. COLLECTING, DISPLAY AND EDUCATIONAL INTERESTThis Stephanoceras densus ammonite fossil is ideal for display in a fossil cabinet, study, classroom, office, collection drawer, natural history arrangement, or British Jurassic fossil collection. Its named species identification, Inferior Oolite Formation origin, Bajocian age, Blagdeni Subzone association, and Red Hole Lane locality give it strong collecting value.It is suitable for collectors interested in Dorset fossils, British ammonites, Jurassic marine life, extinct cephalopods, palaeontology, geology, and educational fossil specimens. The natural coiled form gives the fossil classic visual appeal, while the detailed geological information adds scientific interest and makes it a meaningful specimen from the ancient seas of Jurassic Britain. AUTHENTICITY AND SPECIMEN DETAILSThis is a genuine Stephanoceras densus ammonite fossil from the Inferior Oolite Formation, Middle Jurassic, Bajocian Stage, Blagdeni Subzone, Red Hole Lane, Sherborne, Dorset, UK. It includes a Certificate of Authenticity lifetime guarantee generic card. The photo shows the actual fossil you will receive, and full sizing information can be seen in the photo
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