Hyperlioceras discites Ammonite Fossil | Middle Jurassic Bajocian | Calvados France | Genuine Specimen with Certificate

Description

This listing features a scientifically significant and beautifully preserved Hyperlioceras discites ammonite fossil from the Middle Bajocian Stage of the Jurassic Period, collected in Calvados, Normandy, France. This classic ammonite specimen reflects the rich palaeontological heritage of France’s Jurassic marine deposits and is ideal for collectors or display.

Geological & Stratigraphic Context:

• Location: Calvados, Normandy, France
• Geological Period: Jurassic
• Stage: Middle Jurassic, Bajocian (~170 to 168 million years ago)
• Depositional Environment: Shallow marine shelf with calcareous mudstones and limestones, rich in marine invertebrate fauna including brachiopods, bivalves, and ammonites

Fossil Type & Classification:

• Type: Fossilised Ammonite
• Genus & Species: Hyperlioceras discites (originally described as Ammonites discites by Sowerby in 1825)
• Order: Ammonitida
• Superfamily: Hildoceratoidea
• Family: Graphoceratidae

Morphological Features:

• Moderately involute shell with a relatively compressed profile
• Fine ribbing that bifurcates from the inner whorl and continues across the venter (outer curve)
• The shell’s regular rib pattern and overall symmetry make Hyperlioceras highly identifiable among mid-Jurassic ammonites

Biozone (If Applicable):

• Commonly associated with the Hyperlioceras discites Biozone, which defines part of the lower Bajocian zonal scheme in Europe

Notable Details:

• Hyperlioceras discites is a key index fossil for the Middle Jurassic and plays an important role in biostratigraphy
• Calvados and the Normandy region are renowned for their well-preserved ammonites, offering excellent opportunities for comparative collections
• This specimen has been professionally selected for preservation and definition, perfect for display or educational use

Specimen & Scale Information:

• Scale Rule Squares/Cube = 1cm — See listing photo for exact size and proportions
• You will receive the exact fossil pictured, not a stock image

Certification & Authenticity: All of our fossils are 100% genuine specimens, each supplied with a Certificate of Authenticity. This ammonite has been ethically sourced and carefully curated to ensure scientific and visual quality.

Add a classic piece of Jurassic palaeontology to your collection with this stunning Hyperlioceras discites ammonite fossil from the fossil-rich Bajocian beds of Calvados, France—a timeless addition for any serious collector.