Description
This listing offers a rare and well-preserved Holcophylloceras fossil ammonite from the Aptian stage of the Lower Cretaceous, collected in Auggusac Tarn, France. This striking ammonite comes from marine deposits formed during the rise of modern ocean ecosystems in the Early Cretaceous.
Holcophylloceras belongs to the family Phylloceratidae, a lineage of ammonites noted for their long stratigraphic range, ornate shell features, and close evolutionary ties to earlier Jurassic forms.
Key Features of Holcophylloceras:
- Highly involute coiling with a small umbilicus
- Ornate suture patterns and smooth or lightly ornamented shell
- Thin, compressed whorls with a typically rounded venter
- Genus: Holcophylloceras
- Order: Ammonitida
- Superfamily: Phylloceratoidea
- Family: Phylloceratidae
- Geological Stage: Aptian, Lower Cretaceous
- Location: Auggusac Tarn, France
- Depositional Environment: Deeper marine shelf to slope sediments of the Tethyan Realm
- Biozone: Possibly associated with Deshayesites zones (typical Aptian index genus)
Dated to around 125–113 million years ago, this ammonite highlights the transition in marine faunas and is considered a rare and elegant form within the Aptian ammonite faunal assemblages.
This is a carefully chosen, 100% genuine fossil, and the photo shows the exact specimen you will receive.
- Scale cube = 1cm. Please check the image for full sizing.
- Ideal for advanced collectors, curators, or natural history enthusiasts.
Every fossil we sell includes a Certificate of Authenticity with confirmed ID and origin.
What You Will Receive:
- 1 x authentic Holcophylloceras fossil ammonite (as pictured)
- Certificate of Authenticity
- Tracked and secure packaging
Why Buy From Us?
- All fossils are ethically sourced and expertly prepped
- Guaranteed authentic with full geological context
- Trusted by collectors, educators, and institutions worldwide
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