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RARE AEGOCRIOCERAS SPATHI Heteromorph Ammonite Fossil – Upper Hauterivian, Cretaceous: Hannover, Germany – Alice Purnell Collection

RARE AEGOCRIOCERAS SPATHI Heteromorph Ammonite Fossil – Upper Hauterivian, Cretaceous: Hannover, Germany – Alice Purnell Collection

£72.00

A RARE and well-preserved fossil heteromorph ammonite specimen of Aegocrioceras spathi, originating from the Upper Hauterivian Stage of the Early Cretaceous Period, collected near Hannover, Germany. This specimen hails from the historically important Alice Purnell Collection, recognised for its meticulously curated and scientifically significant fossils.

Aegocrioceras spathi is part of the heteromorph ammonite lineage, known for their unusual and often helically uncoiled or irregularly coiled shells. The genus belongs to the family Ancyloceratidae, within the superfamily Ancyloceratoidea, and the order Ammonitida.

Geological & Scientific Details:

  • Scientific Name: Aegocrioceras spathi
  • Fossil Type: Heteromorph Ammonite
  • Geological Period: Cretaceous
  • Geological Stage: Upper Hauterivian (~129–127 million years ago)
  • Location Found: Hannover, Germany
  • Order: Ammonitida
  • Superfamily: Ancyloceratoidea
  • Family: Ancyloceratidae
  • Morphological Features: Uncoiled to helically coiled shell form, strong ribbing, sharp ornamentation, with complex and irregular suture patterns
  • Depositional Environment: Marine sedimentary basin – typically found in fine-grained marl and limestone beds representing deeper offshore Cretaceous seas in Northern Europe

These fascinating heteromorphs offer insight into early ammonite evolution and palaeoecology. Their distinct morphology and limited stratigraphic range make them important biostratigraphic markers for the Hauterivian.

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 exact specimen you will receive
  • From the Alice Purnell Collection – ideal for collectors, research, or display in a natural history context

A scientifically important and beautifully preserved ammonite from a renowned European site.

(Actual as seen)

Out of stock

SKU: AF1204 Category:

Description

A RARE and well-preserved fossil heteromorph ammonite specimen of Aegocrioceras spathi, originating from the Upper Hauterivian Stage of the Early Cretaceous Period, collected near Hannover, Germany. This specimen hails from the historically important Alice Purnell Collection, recognised for its meticulously curated and scientifically significant fossils.

Aegocrioceras spathi is part of the heteromorph ammonite lineage, known for their unusual and often helically uncoiled or irregularly coiled shells. The genus belongs to the family Ancyloceratidae, within the superfamily Ancyloceratoidea, and the order Ammonitida.

Geological & Scientific Details:

  • Scientific Name: Aegocrioceras spathi
  • Fossil Type: Heteromorph Ammonite
  • Geological Period: Cretaceous
  • Geological Stage: Upper Hauterivian (~129–127 million years ago)
  • Location Found: Hannover, Germany
  • Order: Ammonitida
  • Superfamily: Ancyloceratoidea
  • Family: Ancyloceratidae
  • Morphological Features: Uncoiled to helically coiled shell form, strong ribbing, sharp ornamentation, with complex and irregular suture patterns
  • Depositional Environment: Marine sedimentary basin – typically found in fine-grained marl and limestone beds representing deeper offshore Cretaceous seas in Northern Europe

These fascinating heteromorphs offer insight into early ammonite evolution and palaeoecology. Their distinct morphology and limited stratigraphic range make them important biostratigraphic markers for the Hauterivian.

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 exact specimen you will receive
  • From the Alice Purnell Collection – ideal for collectors, research, or display in a natural history context

A scientifically important and beautifully preserved ammonite from a renowned European site.

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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