RARE Fossil Heteromorph Ammonite Anahamulina subcylindrica – Barremian, Cretaceous – Angles, Provence, France – Alice Purnell Collection

Description

RARE FOSSIL HETEROMORPH AMMONITE – ANAHAMULINA SUBCYLINDRICA

Geological Age: Barremian Stage, Lower Cretaceous (~129–125 million years ago)

Location: Angles, Provence-Alpes-Côte d’Azur, France

From the Alice Purnell Collection

Comes with Certificate of Authenticity

This listing is for a rare and distinctive heteromorph ammonite fossil, Anahamulina subcylindrica, recovered from Barremian-aged marine strata in the renowned fossiliferous region of Angles in Provence, southeastern France.

Anahamulina is a remarkable genus of heteromorph ammonites that deviates from the typical tightly coiled shell form. Instead, it is known for its elongated, uncoiled or loosely coiled shell, exhibiting a near-straight or slightly curved shaft that gives the species a unique appearance among ammonoids.

This particular specimen displays excellent morphological preservation with clear ribbing and curvature, typical of the genus. The photo in the listing shows the exact fossil you will receive, with a 1cm scale cube included for reference.

GEOLOGICAL & TAXONOMIC DETAILS:

• Species: Anahamulina subcylindrica
• Age: Barremian, Lower Cretaceous
• Provenance: Angles, Provence, France
• Stratigraphic Context:
• Deposited in shallow marine carbonate platforms and marl beds of the northern Tethyan margin
• The Barremian stage is known for rich ammonite assemblages and heteromorph diversification
• Order: Ammonitida
• Superfamily: Ancyloceratoidea
• Family: Anahamulinidae
• Shell Morphology:
• Uncoiled, elongate, cylindrical form with subtle curvature
• Fine ribbing along the shell length; no strong ornamentation
• Adapted likely to a planktonic lifestyle
• Biozone: Often associated with lower Barremian ammonite faunas including Gerhardtia and Heteroceras genera
• Identified by: First formally described by Pictet & de Loriol (1858); classified as a key genus in heteromorph evolution

DISPLAY & SCIENTIFIC VALUE:

Anahamulina subcylindrica is a prized find due to its unique uncoiled morphology, which illustrates evolutionary experimentation within the Ammonitida during the Early Cretaceous. This fossil offers excellent educational and visual value for collectors, researchers, and institutions alike.

Its origin from the Alice Purnell Collection adds further historical and scientific significance, ensuring that this is a well-documented and authenticated specimen.

INCLUDED WITH PURCHASE:

• Exact fossil shown in photos
• Certificate of Authenticity
• Scale rule reference (1cm cube shown)
• Secure and careful packaging
• Curated from the Alice Purnell Collection

SUMMARY:

This is an exceptionally rare Barremian heteromorph ammonite fossil, Anahamulina subcylindrica, exhibiting classic elongated morphology from the Early Cretaceous of Provence, France. A wonderful addition to any advanced fossil collection, this specimen also serves as a fascinating glimpse into ammonite evolution.