RARE Fossil Ammonite Bullatimorphites bullatus – Lower Callovian, Jurassic – Deux-Sèvres, France – Certified – Alice Purnell Collection

Description

RARE FOSSIL AMMONITE – Bullatimorphites bullatus

Lower Callovian Stage | Middle Jurassic (~165 million years ago)

Deux-Sèvres, Nouvelle-Aquitaine, France

From the Alice Purnell Collection

Certificate of Authenticity Included

This listing offers a rare and scientifically significant fossil ammonite, Bullatimorphites bullatus, from the Lower Callovian Stage of the Middle Jurassic, collected in Deux-Sèvres, France — a locality known for its marine sedimentary deposits and ammonite fauna.

The specimen comes from the Alice Purnell Collection, a well-regarded private palaeontological archive. It is a carefully selected and preserved example, and the photograph shows the exact fossil you will receive. A 1cm scale cube is shown for size reference — please refer to photos for full dimensions.

GEOLOGICAL & TAXONOMIC INFORMATION:

• Species: Bullatimorphites bullatus
• Family: Sonniniidae
• Superfamily: Hildoceratoidea
• Order: Ammonitida
• Class: Cephalopoda
• Phylum: Mollusca
• Age: Lower Callovian, Middle Jurassic (~165 Ma)
• Formation/Deposits: Clay and marl beds, often associated with shallow marine shelf deposits
• Locality: Deux-Sèvres, Nouvelle-Aquitaine, France
• Zone: Possibly from the Macrocephalites herveyi Zone (typical for early Callovian ammonite ranges, though not definitively specified)
• Depositional Environment: Offshore marine shelf with moderate energy conditions, fostering nektonic ammonite faunas alongside benthic bivalves and brachiopods

MORPHOLOGY & FEATURES:

Bullatimorphites bullatus is a member of the Sonniniidae family, notable for:

• Strongly involute shell with a relatively narrow umbilicus
• Globose or subglobose shape, often nearly spherical in appearance
• Fine ribbing and smooth surface in mature whorls
• Low-relief ornamentation, giving it a distinct contrast with more highly ornamented ammonites of similar age
• Often used as a biostratigraphic marker within early Callovian deposits across Western Europe

SCIENTIFIC & COLLECTOR INTEREST:

This species holds importance for Callovian zonation and faunal correlation. The compact shape and fine detailing make it visually appealing and educationally valuable, representing a transitional morphological form within the Sonniniidae lineage.

SPECIMEN DETAILS:

• Species: Bullatimorphites bullatus
• Age: Lower Callovian, Middle Jurassic
• Origin: Deux-Sèvres, France
• Condition: Excellent preservation, visible ribbing and morphology
• Provenance: Alice Purnell Collection
• Certification: Certificate of Authenticity included
• Scale Reference: 1cm cube shown in photo

Whether you’re a collector, educator, or enthusiast of palaeontology, this is a superb specimen of a rare Jurassic ammonite with solid provenance and presentation. A fantastic addition to any fossil or natural history collection.