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RARE AEGOCRIOCERAS CAPRICORNUS Heteromorph Ammonite Fossil – Lower Hauterivian, Cretaceous: Hannover, Germany – Alice Purnell Collection
RARE AEGOCRIOCERAS CAPRICORNUS Heteromorph Ammonite Fossil – Lower Hauterivian, Cretaceous: Hannover, Germany – Alice Purnell Collection - Image 2

RARE AEGOCRIOCERAS CAPRICORNUS Heteromorph Ammonite Fossil – Lower Hauterivian, Cretaceous: Hannover, Germany – Alice Purnell Collection

£96.00

A RARE and striking fossil heteromorph ammonite specimen of Aegocrioceras capricornus, originating from the Lower Hauterivian Stage of the Early Cretaceous, collected near Hannover, Germany. This authentic and scientifically valuable specimen is part of the acclaimed Alice Purnell Collection, curated for its palaeontological relevance and well-preserved fossils.

Aegocrioceras capricornus belongs to the family Crioceratitidae, within the heteromorph ammonites. These ammonites are notable for their uncoiled, planispiral shell structure, which differs significantly from the typical tightly coiled forms of many other ammonites. The unique shape and rarity of Aegocrioceras species make them a centrepiece in both research and fossil collections.

Geological & Scientific Details:

  • Scientific Name: Aegocrioceras capricornus
  • Fossil Type: Heteromorph Ammonite
  • Geological Period: Cretaceous
  • Geological Stage: Lower Hauterivian (~133–129 million years ago)
  • Location Found: Hannover, Germany
  • Order: Ammonitida
  • Superfamily: Ancyloceratoidea
  • Family: Crioceratitidae
  • Morphological Features: Open, loosely coiled planispiral shell with fine ribbing and distinct nodes; complex suture pattern
  • Depositional Environment: Marine sedimentary basin – likely deposited in a low-energy, offshore shelf setting during a transgressive sea phase in the Early Cretaceous

This ammonite showcases the evolutionary diversity of heteromorphs during the Hauterivian and contributes to our understanding of palaeobiogeography and faunal turnover during the early part of the Cretaceous.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Please Note:

  • Scale Rule Squares / Cube = 1cm – full sizing is visible in the photo
  • The fossil pictured is the actual specimen you will receive
  • From the Alice Purnell Collection – ideal for collectors, academic reference, or display in a palaeontological or museum context

A premium fossil specimen from an important European locality, combining aesthetic appeal with scientific importance.

(Actual as seen)

Out of stock

SKU: AF1206 Category:

Description

A RARE and striking fossil heteromorph ammonite specimen of Aegocrioceras capricornus, originating from the Lower Hauterivian Stage of the Early Cretaceous, collected near Hannover, Germany. This authentic and scientifically valuable specimen is part of the acclaimed Alice Purnell Collection, curated for its palaeontological relevance and well-preserved fossils.

Aegocrioceras capricornus belongs to the family Crioceratitidae, within the heteromorph ammonites. These ammonites are notable for their uncoiled, planispiral shell structure, which differs significantly from the typical tightly coiled forms of many other ammonites. The unique shape and rarity of Aegocrioceras species make them a centrepiece in both research and fossil collections.

Geological & Scientific Details:

  • Scientific Name: Aegocrioceras capricornus
  • Fossil Type: Heteromorph Ammonite
  • Geological Period: Cretaceous
  • Geological Stage: Lower Hauterivian (~133–129 million years ago)
  • Location Found: Hannover, Germany
  • Order: Ammonitida
  • Superfamily: Ancyloceratoidea
  • Family: Crioceratitidae
  • Morphological Features: Open, loosely coiled planispiral shell with fine ribbing and distinct nodes; complex suture pattern
  • Depositional Environment: Marine sedimentary basin – likely deposited in a low-energy, offshore shelf setting during a transgressive sea phase in the Early Cretaceous

This ammonite showcases the evolutionary diversity of heteromorphs during the Hauterivian and contributes to our understanding of palaeobiogeography and faunal turnover during the early part of the Cretaceous.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Please Note:

  • Scale Rule Squares / Cube = 1cm – full sizing is visible in the photo
  • The fossil pictured is the actual specimen you will receive
  • From the Alice Purnell Collection – ideal for collectors, academic reference, or display in a palaeontological or museum context

A premium fossil specimen from an important European locality, combining aesthetic appeal with scientific importance.

Additional information

Era

Cretaceous
Origin

Germany

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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