Bajocisphinctes bajociensis Ammonite Fossil Bajocian Jurassic France Authentic Specimen COA
£ 18.00
BAJOCISPHINCTES BAJOCIENSIS AMMONITE FOSSILThis listing presents a fine Bajocisphinctes bajociensis Ammonite Fossil from
the Bajocian stage of the Middle Jurassic, collected near Caen, Normandy, France. Dating to around 170 million years ago, this ammonite is a scientifically significant species, highly regarded both for its rarity and for its role in biostratigraphy. The fossil shown in the photographs is the exact specimen you will receive, with a 1 cm scale cube included for sizing reference. Every fossil is 100% genuine and comes with a Certificate of Authenticity. GEOLOGICAL CONTEXT – BAJOCIAN OF CAEN, FRANCEThe specimen originates from the Jurassic deposits of Caen, a region in Normandy renowned for its fossil-rich oolitic limestones. During the Bajocian stage, the area was covered by shallow seas linked to the Tethys Ocean, where warm, carbonate-rich waters allowed the development of oolitic shoals and reefs. These marine conditions provided an excellent environment for ammonites, brachiopods, bivalves, and other marine life.The Inferior Oolite formations in France, like those in England, are particularly important because their ammonite faunas are used as precise index fossils, helping paleontologists to subdivide the Bajocian into ammonite biozones. The presence of Bajocisphinctes bajociensis in these deposits provides a strong chronological marker for this stage of the Middle Jurassic. SPECIES OVERVIEW – BAJOCISPHINCTES BAJOCIENSISThis specimen belongs to Bajocisphinctes bajociensis, a species within the order Ammonitida, superfamily Perisphinctoidea, and family Perisphinctidae. Ammonites of this genus are typically evolute in coiling, with compressed whorls and ribbing that may bifurcate toward the outer flanks. The ribs are often strong and evenly spaced, giving the shell a visually striking appearance.Bajocisphinctes bajociensis is notable for its diagnostic features that make it instantly recognisable among Bajocian ammonites. The elegant ribbing and classic Jurassic form highlight its place as one of the key species used in defining ammonite zones of this age. PALEONTOLOGICAL IMPORTANCEBajocisphinctes bajociensis is a cornerstone index fossil for the Bajocian stage of the Middle Jurassic. Its restricted stratigraphic distribution and distinctive features allow geologists to use it as a primary reference for defining ammonite biozones, which are essential for correlating marine strata across Europe and beyond.This species also illustrates the evolutionary radiation of the Perisphinctidae during the Bajocian, when ammonites diversified into numerous morphologies adapted for life in shallow epicontinental seas. Its morphology reflects a nektonic mode of life, with a streamlined shell well-suited for active swimming and predation in open water environments. COLLECTOR’S AND EDUCATIONAL VALUEThis Bajocisphinctes bajociensis ammonite fossil is a superb specimen for both collectors and educators. For collectors, its provenance from Caen in Normandy, combined with its role as a stratigraphically important species, makes it a highly desirable addition to any Jurassic collection. For students and teachers, it provides a tangible example of ammonite diversity and its use in biostratigraphy, as well as an excellent teaching tool for illustrating Jurassic geology. GUARANTEE OF AUTHENTICITY
• 100% genuine Bajocisphinctes bajociensis ammonite fossil
• Supplied with a Certificate of Authenticity
• Exact specimen shown in the photographs will be sentThis is a rare opportunity to acquire a scientifically important and beautifully preserved Bajocisphinctes bajociensis Ammonite Fossil from the Bajocian of Caen, Normandy, France, a specimen of both scientific and collector’s significance.
the Bajocian stage of the Middle Jurassic, collected near Caen, Normandy, France. Dating to around 170 million years ago, this ammonite is a scientifically significant species, highly regarded both for its rarity and for its role in biostratigraphy. The fossil shown in the photographs is the exact specimen you will receive, with a 1 cm scale cube included for sizing reference. Every fossil is 100% genuine and comes with a Certificate of Authenticity. GEOLOGICAL CONTEXT – BAJOCIAN OF CAEN, FRANCEThe specimen originates from the Jurassic deposits of Caen, a region in Normandy renowned for its fossil-rich oolitic limestones. During the Bajocian stage, the area was covered by shallow seas linked to the Tethys Ocean, where warm, carbonate-rich waters allowed the development of oolitic shoals and reefs. These marine conditions provided an excellent environment for ammonites, brachiopods, bivalves, and other marine life.The Inferior Oolite formations in France, like those in England, are particularly important because their ammonite faunas are used as precise index fossils, helping paleontologists to subdivide the Bajocian into ammonite biozones. The presence of Bajocisphinctes bajociensis in these deposits provides a strong chronological marker for this stage of the Middle Jurassic. SPECIES OVERVIEW – BAJOCISPHINCTES BAJOCIENSISThis specimen belongs to Bajocisphinctes bajociensis, a species within the order Ammonitida, superfamily Perisphinctoidea, and family Perisphinctidae. Ammonites of this genus are typically evolute in coiling, with compressed whorls and ribbing that may bifurcate toward the outer flanks. The ribs are often strong and evenly spaced, giving the shell a visually striking appearance.Bajocisphinctes bajociensis is notable for its diagnostic features that make it instantly recognisable among Bajocian ammonites. The elegant ribbing and classic Jurassic form highlight its place as one of the key species used in defining ammonite zones of this age. PALEONTOLOGICAL IMPORTANCEBajocisphinctes bajociensis is a cornerstone index fossil for the Bajocian stage of the Middle Jurassic. Its restricted stratigraphic distribution and distinctive features allow geologists to use it as a primary reference for defining ammonite biozones, which are essential for correlating marine strata across Europe and beyond.This species also illustrates the evolutionary radiation of the Perisphinctidae during the Bajocian, when ammonites diversified into numerous morphologies adapted for life in shallow epicontinental seas. Its morphology reflects a nektonic mode of life, with a streamlined shell well-suited for active swimming and predation in open water environments. COLLECTOR’S AND EDUCATIONAL VALUEThis Bajocisphinctes bajociensis ammonite fossil is a superb specimen for both collectors and educators. For collectors, its provenance from Caen in Normandy, combined with its role as a stratigraphically important species, makes it a highly desirable addition to any Jurassic collection. For students and teachers, it provides a tangible example of ammonite diversity and its use in biostratigraphy, as well as an excellent teaching tool for illustrating Jurassic geology. GUARANTEE OF AUTHENTICITY
• 100% genuine Bajocisphinctes bajociensis ammonite fossil
• Supplied with a Certificate of Authenticity
• Exact specimen shown in the photographs will be sentThis is a rare opportunity to acquire a scientifically important and beautifully preserved Bajocisphinctes bajociensis Ammonite Fossil from the Bajocian of Caen, Normandy, France, a specimen of both scientific and collector’s significance.
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