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CALYCOCERAS GUANGERI Fossil Ammonite – Cenomanian, Cretaceous – Dorset, UK – Certified Authentic – Alice Purnell Collection

£36.00

An excellent and scientifically significant specimen of Calycoceras guangeri, a fossil ammonite from the Cenomanian Stage of the Upper Cretaceous, found in Dorset, United Kingdom. This fossil is a prime representative of the heteromorph ammonite group with its distinctive ornamentation and belongs to the esteemed Alice Purnell Collection.

The specimen shown in the listing photo is the actual fossil you will receive. Scale Rule Squares / Cube = 1cm. Please refer to the photo for accurate sizing.

Geological & Scientific Details:

  • Fossil Type: Ammonite (Extinct Marine Cephalopod)
  • Species: Calycoceras guangeri
  • Geological Age: Cenomanian, Upper Cretaceous (~100–94 million years ago)
  • Location: Dorset, United Kingdom
  • Morphology Features: Characterised by pronounced, tuberculate ribbing and moderately evolute coiling; strong keel and dense ornamentation. Shell shows complex suture patterns typical of the genus.
  • Family: Acanthoceratidae
  • Superfamily: Acanthoceratoidea
  • Order: Ammonitida
  • Depositional Environment: Shallow marine carbonate platform or shelf environment, commonly linked to highstand sea levels in warm epicontinental seas
  • Notable: Calycoceras guangeri is notable for its strong sculptural elements and importance in Cenomanian biostratigraphy. It provides valuable insight into mid-Cretaceous ammonite evolution and paleoenvironments of Southern England.

This fossil is ideal for collectors, educators, or researchers seeking an authentic, display-quality ammonite from a classic British Cretaceous site.

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

Please Note:

  • Scale Rule Squares / Cube = 1cm – See photo for full dimensions
  • The specimen shown is the exact item you will receive
  • From the prestigious Alice Purnell Collection

 

(Actual as seen)

Out of stock

SKU: AF1233 Category:

Description

An excellent and scientifically significant specimen of Calycoceras guangeri, a fossil ammonite from the Cenomanian Stage of the Upper Cretaceous, found in Dorset, United Kingdom. This fossil is a prime representative of the heteromorph ammonite group with its distinctive ornamentation and belongs to the esteemed Alice Purnell Collection.

The specimen shown in the listing photo is the actual fossil you will receive. Scale Rule Squares / Cube = 1cm. Please refer to the photo for accurate sizing.

Geological & Scientific Details:

  • Fossil Type: Ammonite (Extinct Marine Cephalopod)
  • Species: Calycoceras guangeri
  • Geological Age: Cenomanian, Upper Cretaceous (~100–94 million years ago)
  • Location: Dorset, United Kingdom
  • Morphology Features: Characterised by pronounced, tuberculate ribbing and moderately evolute coiling; strong keel and dense ornamentation. Shell shows complex suture patterns typical of the genus.
  • Family: Acanthoceratidae
  • Superfamily: Acanthoceratoidea
  • Order: Ammonitida
  • Depositional Environment: Shallow marine carbonate platform or shelf environment, commonly linked to highstand sea levels in warm epicontinental seas
  • Notable: Calycoceras guangeri is notable for its strong sculptural elements and importance in Cenomanian biostratigraphy. It provides valuable insight into mid-Cretaceous ammonite evolution and paleoenvironments of Southern England.

This fossil is ideal for collectors, educators, or researchers seeking an authentic, display-quality ammonite from a classic British Cretaceous site.

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

Please Note:

  • Scale Rule Squares / Cube = 1cm – See photo for full dimensions
  • The specimen shown is the exact item you will receive
  • From the prestigious Alice Purnell Collection

 

Additional information

Era

Cretaceous

Origin

United Kingdom

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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