Fossils for Sale - High-quality BRITISH and WORLDWIDE Fossils. An impressive selection of fossils, including Ammonites, Trilobites, Belemnites, Fossil Fish, Fossil Shark Teeth, Fossilised Insects in Amber, Dinosaurs, and Reptiles. UK Fossils was formed in 1988 and collects and preps our own fossils in the heart of the Jurassic Coast, collecting fossils from Lyme Regis, Charmouth and Somerset. Our passion for fossils is reflected in our carefully curated collection, which includes some of the rarest and most unique specimens available.

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RARE 5.5″ Calycoceras naviculare Fossil Ammonite | Upper Cenomanian Cretaceous | Whitecliff Bay Isle of Wight UK | Genuine Specimen

£48.00

A striking and rare 5.5″ fossil ammonite: Calycoceras naviculare from the Upper Cenomanian Stage of the Cretaceous Period, discovered in the well-known chalk and marl deposits of Whitecliff Bay, Isle of Wight, United Kingdom. This beautifully preserved specimen represents a classic example of a mid-Cretaceous heteromorph ammonite from one of Britain’s most fossiliferous coastal locations.

The fossil pictured is the exact specimen you will receive, shown with a 1cm scale cube for accurate sizing. Please refer to the images for full size and detail.

 

Geological & Palaeontological Information:

  • Fossil Type: Ammonite
  • Species: Calycoceras naviculare (originally described by Mantell, 1822)
  • Geological Period: Cretaceous
  • Stage: Upper Cenomanian (~95 to 93 million years ago)
  • Location: Whitecliff Bay, Isle of Wight, England, UK
  • Depositional Environment: Shallow marine shelf with alternating marl, chalk, and silt beds; typical of the southern British Chalk Group
  • Order: Ammonitida
  • Superfamily: Acanthoceratoidea
  • Family: Acanthoceratidae
  • Biozone (Inferred): Possibly within the Metoicoceras geslinianum or Calycoceras guerangeri zones of the Upper Cenomanian

 

Morphological Features:

  • Strongly ornamented with pronounced tubercles and ribs
  • Evolute shell with broad, slightly compressed whorls
  • Dense ribbing that may bifurcate or trifurcate across the flanks
  • Distinctive keel and ventrolateral tubercles often present

 

Notable Points:

  • Calycoceras naviculare is a well-known marker ammonite used in Upper Cretaceous biostratigraphy
  • Fossils from Whitecliff Bay are becoming increasingly scarce due to erosion and protection of collecting sites
  • This specimen’s strong preservation and classic features make it ideal for serious collectors

 

Why This Fossil is Special:

  • Rare species from a famous UK fossil site
  • Excellent preservation of ornamentation and morphology
  • Supplied with a Certificate of Authenticity for provenance assurance
  • Ethically sourced and 100% genuine
  • Ideal for educational display, scientific collection, or natural history decor

 

(Actual as seen)

Only 1 left in stock

SKU: UF4489 Category:

Description

A striking and rare 5.5″ fossil ammonite: Calycoceras naviculare from the Upper Cenomanian Stage of the Cretaceous Period, discovered in the well-known chalk and marl deposits of Whitecliff Bay, Isle of Wight, United Kingdom. This beautifully preserved specimen represents a classic example of a mid-Cretaceous heteromorph ammonite from one of Britain’s most fossiliferous coastal locations.

The fossil pictured is the exact specimen you will receive, shown with a 1cm scale cube for accurate sizing. Please refer to the images for full size and detail.

 

Geological & Palaeontological Information:

  • Fossil Type: Ammonite
  • Species: Calycoceras naviculare (originally described by Mantell, 1822)
  • Geological Period: Cretaceous
  • Stage: Upper Cenomanian (~95 to 93 million years ago)
  • Location: Whitecliff Bay, Isle of Wight, England, UK
  • Depositional Environment: Shallow marine shelf with alternating marl, chalk, and silt beds; typical of the southern British Chalk Group
  • Order: Ammonitida
  • Superfamily: Acanthoceratoidea
  • Family: Acanthoceratidae
  • Biozone (Inferred): Possibly within the Metoicoceras geslinianum or Calycoceras guerangeri zones of the Upper Cenomanian

 

Morphological Features:

  • Strongly ornamented with pronounced tubercles and ribs
  • Evolute shell with broad, slightly compressed whorls
  • Dense ribbing that may bifurcate or trifurcate across the flanks
  • Distinctive keel and ventrolateral tubercles often present

 

Notable Points:

  • Calycoceras naviculare is a well-known marker ammonite used in Upper Cretaceous biostratigraphy
  • Fossils from Whitecliff Bay are becoming increasingly scarce due to erosion and protection of collecting sites
  • This specimen’s strong preservation and classic features make it ideal for serious collectors

 

Why This Fossil is Special:

  • Rare species from a famous UK fossil site
  • Excellent preservation of ornamentation and morphology
  • Supplied with a Certificate of Authenticity for provenance assurance
  • Ethically sourced and 100% genuine
  • Ideal for educational display, scientific collection, or natural history decor

 

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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