Description
Genuine Belemnite Phragmocone Fossil from Whitby, North Yorkshire
An authentic Belemnite phragmocone fossil from the famous Upper Toarcian Jurassic deposits of Whitby, North Yorkshire, United Kingdom. This exceptional marine fossil preserves part of the internal chambered shell structure of an extinct squid-like cephalopod that inhabited the Jurassic seas approximately 175–180 million years ago.
This fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The photographs show the exact specimen you will receive. Full sizing please see photo.
Your specimen was discovered by our own team members, Alister and Alison, and has been carefully cleaned, prepped and treated by Alison to preserve the natural structure and detail of the fossil.
About Belemnites
Belemnites were extinct marine cephalopods belonging to the Order Belemnitida, closely related to modern squid, cuttlefish and octopus. They were among the most successful marine predators of the Jurassic and Cretaceous seas and are now one of the most recognisable fossils found within British Jurassic deposits.
Unlike modern squid, belemnites possessed a hard internal skeleton made up of several components including the guard, pro-ostracum and phragmocone. The phragmocone was a chambered buoyancy structure similar in function to the shell chambers of modern nautiloids.
This fossil preserves the phragmocone section, which originally contained a series of gas-filled chambers separated by thin septa. These chambers allowed the animal to regulate buoyancy and maintain stability while swimming through ancient oceans.
Belemnites were active predators that likely fed on fish, crustaceans and smaller marine organisms. Fossilised remains are especially abundant within the Jurassic rocks of Yorkshire due to the exceptional preservation conditions present at the time.
Geological Age and Whitby Formation
This specimen originates from the Upper Toarcian stage of the Early Jurassic, recovered from the world-famous fossil-bearing deposits along the coastline at Whitby, North Yorkshire.
During the Jurassic period, much of Britain was submerged beneath a warm shallow marine sea rich in ammonites, belemnites, marine reptiles and fish. Fine muds accumulated on the seabed and eventually formed the Whitby Mudstone Formation, one of the most important fossil-bearing geological units in the United Kingdom.
Low oxygen conditions within parts of the seabed environment helped preserve delicate shell structures and marine organisms in remarkable detail. These deposits continue to yield scientifically important fossils and have been studied by geologists and palaeontologists for centuries.
Whitby is internationally recognised as one of the finest Jurassic fossil localities in Europe.
Fossil Preservation and Morphological Features
This genuine Belemnite phragmocone fossil has been carefully prepared to reveal the intricate chambered internal structure while preserving the integrity of the surrounding matrix. Depending on preservation, the fossil may display visible septa, chamber divisions and mineralised shell textures characteristic of cephalopod phragmocones.
Each specimen from Whitby is naturally unique, with variations in preservation, colouration and mineralisation formed during millions of years of fossilisation.
No replicas or casts are involved. The fossil shown in the photographs is the exact specimen you will receive.
The professional preparation by Alison ensures the specimen remains stable and suitable for long-term display, collecting and study.
Whitby Jurassic Fossils
Whitby has a world-famous reputation for Jurassic fossils and has produced some of the finest ammonites and belemnites ever discovered in Britain. The fossil-rich cliffs and foreshore exposures continue to attract collectors and researchers from around the world.
Belemnite fossils from Whitby are especially desirable because of their excellent preservation and connection to classic British Jurassic geology.
This specimen is ideal for:
- Fossil collectors
- Jurassic fossil collections
- Cephalopod fossil collections
- Whitby fossil collections
- Marine fossil enthusiasts
- Educational displays
- Geological study collections
- Natural history collections
The preserved internal chamber structure makes phragmocone specimens particularly fascinating examples of prehistoric cephalopod anatomy.
Certificate of Authenticity Included
All of our fossils are guaranteed 100% genuine specimens and include a Certificate of Authenticity lifetime guarantee generic card. We personally recover many of our fossils from UK localities and professionally prepare them in-house to ensure authenticity and quality.
The fossil photographed is the exact specimen you will receive, making this a unique and genuine piece of Jurassic marine history from the famous fossil-bearing deposits of Whitby, North Yorkshire, England.
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