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Rare Fossil Ammonite Holcophylloceras Cretaceous Aptian Auggusac Tarn France | Authentic Collector Fossil

Rare Fossil Ammonite Holcophylloceras Cretaceous Aptian Auggusac Tarn France | Authentic Collector Fossil

Original price was: £9.60.Current price is: £8.64.

This listing features a rare and visually striking fossil of Holcophylloceras sp., a genus of highly ornate ammonite from the Aptian stage of the Early Cretaceous period. This specimen was discovered near Auggusac, Tarn, France, a region renowned for its Lower Cretaceous marine deposits and exceptional fossil preservation.

Geological Context:

  • Fossil Type: Ammonite (Extinct marine cephalopod, related to modern squid and nautilus)
  • Genus: Holcophylloceras (formally described by Spath, 1924)
  • Order: Ammonitida
  • Superfamily: Phylloceratina
  • Family: Phylloceratidae
  • Geological Stage: Aptian (c. 125 to 113 million years ago)
  • Formation: Lower Cretaceous marine sediments of the Tarn region
  • Depositional Environment: Deeper marine shelf or outer ramp with calcareous sedimentation

Holcophylloceras ammonites are known for their elegant, involute shells and beautifully lobed suture lines, typical of the Phylloceratid lineage. These ammonites represent some of the more refined and delicate examples of Cretaceous ammonoid evolution.

Morphology & Notable Features:

  • Involute, discoidal shell with smooth flanks
  • Fine growth lines or subtle ribbing
  • Strongly developed, complex phylloid sutures
  • Thin, compressed shell with narrow umbilicus
  • Rarely encountered in such complete and display-worthy preservation

Biozone Association: Holcophylloceras species typically occur in the Deshayesites biozones of the Aptian and are helpful in correlating lower Cretaceous marine sequences across Western Europe and the Tethyan realm.

Specimen Details:

  • Origin: Auggusac, Tarn, France
  • Age: Aptian Stage, Early Cretaceous (~120 million years old)
  • Scale: Scale rule square/cube = 1cm. Refer to photo for precise size
  • Condition: Hand-selected for exceptional preservation and morphological clarity
  • Photo: The fossil shown is the exact item you will receive

Certification & Authenticity: All of our fossils are 100% genuine and come with a Certificate of Authenticity. Each item is individually vetted for quality, educational merit, and collector appeal.

This rare Holcophylloceras ammonite from the Cretaceous seas of southern France is a captivating piece of natural history—ideal for fossil collectors, educators, and palaeontological enthusiasts alike.

(Actual as seen)

Only 1 left in stock

SKU: SF0723 Category:

Description

This listing features a rare and visually striking fossil of Holcophylloceras sp., a genus of highly ornate ammonite from the Aptian stage of the Early Cretaceous period. This specimen was discovered near Auggusac, Tarn, France, a region renowned for its Lower Cretaceous marine deposits and exceptional fossil preservation.

Geological Context:

  • Fossil Type: Ammonite (Extinct marine cephalopod, related to modern squid and nautilus)
  • Genus: Holcophylloceras (formally described by Spath, 1924)
  • Order: Ammonitida
  • Superfamily: Phylloceratina
  • Family: Phylloceratidae
  • Geological Stage: Aptian (c. 125 to 113 million years ago)
  • Formation: Lower Cretaceous marine sediments of the Tarn region
  • Depositional Environment: Deeper marine shelf or outer ramp with calcareous sedimentation

Holcophylloceras ammonites are known for their elegant, involute shells and beautifully lobed suture lines, typical of the Phylloceratid lineage. These ammonites represent some of the more refined and delicate examples of Cretaceous ammonoid evolution.

Morphology & Notable Features:

  • Involute, discoidal shell with smooth flanks
  • Fine growth lines or subtle ribbing
  • Strongly developed, complex phylloid sutures
  • Thin, compressed shell with narrow umbilicus
  • Rarely encountered in such complete and display-worthy preservation

Biozone Association: Holcophylloceras species typically occur in the Deshayesites biozones of the Aptian and are helpful in correlating lower Cretaceous marine sequences across Western Europe and the Tethyan realm.

Specimen Details:

  • Origin: Auggusac, Tarn, France
  • Age: Aptian Stage, Early Cretaceous (~120 million years old)
  • Scale: Scale rule square/cube = 1cm. Refer to photo for precise size
  • Condition: Hand-selected for exceptional preservation and morphological clarity
  • Photo: The fossil shown is the exact item you will receive

Certification & Authenticity: All of our fossils are 100% genuine and come with a Certificate of Authenticity. Each item is individually vetted for quality, educational merit, and collector appeal.

This rare Holcophylloceras ammonite from the Cretaceous seas of southern France is a captivating piece of natural history—ideal for fossil collectors, educators, and palaeontological enthusiasts alike.

Additional information

Era

Cretaceous
Origin

France

Cretaceous Information

The Cretaceous Period (145–66 million years ago) was the final era of the Mesozoic, marked by the dominance of dinosaurs and the rise of flowering plants. It had a warm, greenhouse climate, with high sea levels that created vast shallow inland seas. Marine life flourished, including mosasaurs, ammonites, and rudist reefs, while the land was ruled by iconic dinosaurs like Tyrannosaurus rex, Triceratops, and Spinosaurus. Mammals and birds diversified, and insects thrived. The period ended with the mass extinction event, likely caused by an asteroid impact, wiping out the dinosaurs and paving the way for the rise of mammals in the Cenozoic.

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