Description
British Chalk Belemnite – Gonioteuthis granulata
Santonian Stage, Late Cretaceous (~86.3–83.6 million years ago)
From the Chalk Group – Broadstairs, Kent, United Kingdom
Taxonomic Classification:
- Kingdom: Animalia
- Phylum: Mollusca
- Class: Cephalopoda
- Order: Belemnitida
- Superfamily: Belemnopseina
- Family: Belemnitellidae
- Genus: Gonioteuthis
- Species: Gonioteuthis granulata
- Originally described by Blainville in 1827
Geological & Stratigraphic Context:
- Geological Stage: Santonian (Upper Cretaceous)
- Formation: Upper Chalk Formation, British Chalk Group
- Location: Broadstairs, Kent, UK
- Depositional Environment: Quiet, deep marine shelf environment with slow accumulation of calcareous ooze, resulting in the iconic white chalk beds of southern England
Morphology and Fossil Features:
- Belemnites are extinct marine cephalopods, and Gonioteuthis granulata is a well-known belemnite species from the Late Cretaceous
- This species is characterised by a long, narrow guard (rostrum) with fine longitudinal striations and granulate surface texture — features that aid in identification
- The rostrum functioned as a stabiliser and counterweight in life, helping the belemnite swim in an upright position
- Often found in the same fossil-bearing chalk as ammonites, fish, and echinoids
- The fossil represents the hard internal shell of the animal and is typically bullet-shaped
Scientific Significance & Notable Use:
- Gonioteuthis granulata is an important index fossil used for correlating Upper Cretaceous (Santonian) marine strata across northwestern Europe
- The presence of this species is used to date Santonian-age chalk and marl deposits
- Its distinct morphology makes it valuable for both scientific research and private fossil collections
Specimen Information:
- This is a 100% genuine fossil of Gonioteuthis granulata
- Found in the world-renowned white chalk cliffs near Broadstairs, Kent
- Carefully selected and preserved to show defining features
- Scale cube = 1cm – see photo for precise size
- You will receive the exact specimen shown in the photo
- Comes complete with a Certificate of Authenticity
Summary:
This is a superb example of the British belemnite Gonioteuthis granulata, collected from the famous chalk deposits of Kent. A fine Santonian specimen with clear diagnostic features, ideal for collectors, educators, and enthusiasts of marine paleo-life from the Late Cretaceous.





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