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RARE Schloenbachia varians subvarians Fossil Ammonite | Lower Cenomanian Cretaceous | Yaverland Isle of Wight UK

£36.00

A beautifully preserved and rare fossil ammonite: Schloenbachia varians subvarians from the Lower Cenomanian Stage of the Early Late Cretaceous, collected from the well-known fossil site at Yaverland, Isle of Wight, United Kingdom. This genuine ammonite exhibits the classic ornamentation of the Schloenbachia group and provides significant palaeontological value for collectors and researchers alike.

The fossil shown is the exact specimen you will receive, professionally photographed with a 1cm scale cube for accurate size reference. Please see images for detailed condition and sizing.

 

Geological & Palaeontological Information:

  • Fossil Type: Ammonite
  • Species/Subspecies: Schloenbachia varians subvarians (originally described by Mantell, 1822; subspecies differentiation recognised in later studies)
  • Geological Period: Cretaceous
  • Stage: Lower Cenomanian (~100 to 96 million years ago)
  • Location: Yaverland, Isle of Wight, England, UK
  • Depositional Environment: Marine shelf setting; glauconitic sands and clays of the Lower Chalk and Upper Greensand transitional beds
  • Order: Ammonitida
  • Superfamily: Acanthoceratoidea
  • Family: Schloenbachiidae
  • Biozone (Inferred): Possibly within the Mantelliceras mantelli or early Schloenbachia varians Biozone of the Lower Cenomanian

 

Morphological Features:

  • Highly variable coiling and ornamentation (as suggested by the name “varians”)
  • Typically displays strong, sinuous ribs with ventrolateral tubercles
  • Moderately involute with compressed whorls and a rounded or slightly keeled venter
  • Fine suture lines may be visible depending on preservation quality

 

Notable Points:

  • Schloenbachia varians subvarians is a diagnostic ammonite for the early Cenomanian and is crucial in biostratigraphic correlation across Europe
  • Yaverland is one of the most important fossil localities on the Isle of Wight, known for its rich Lower Cretaceous and early Upper Cretaceous faunas
  • Subspecies are rare and often display transitional morphological traits, making them scientifically significant

 

Why This Fossil is a Special Find:

  • Rare UK ammonite subspecies with strong biostratigraphic value
  • Sourced from a classic Isle of Wight locality
  • Excellent display specimen with striking ribbing and form
  • Supplied with a Certificate of Authenticity
  • 100% genuine and ethically sourced

 

(Actual as seen)

Out of stock

SKU: UF4500 Category:

Description

A beautifully preserved and rare fossil ammonite: Schloenbachia varians subvarians from the Lower Cenomanian Stage of the Early Late Cretaceous, collected from the well-known fossil site at Yaverland, Isle of Wight, United Kingdom. This genuine ammonite exhibits the classic ornamentation of the Schloenbachia group and provides significant palaeontological value for collectors and researchers alike.

The fossil shown is the exact specimen you will receive, professionally photographed with a 1cm scale cube for accurate size reference. Please see images for detailed condition and sizing.

 

Geological & Palaeontological Information:

  • Fossil Type: Ammonite
  • Species/Subspecies: Schloenbachia varians subvarians (originally described by Mantell, 1822; subspecies differentiation recognised in later studies)
  • Geological Period: Cretaceous
  • Stage: Lower Cenomanian (~100 to 96 million years ago)
  • Location: Yaverland, Isle of Wight, England, UK
  • Depositional Environment: Marine shelf setting; glauconitic sands and clays of the Lower Chalk and Upper Greensand transitional beds
  • Order: Ammonitida
  • Superfamily: Acanthoceratoidea
  • Family: Schloenbachiidae
  • Biozone (Inferred): Possibly within the Mantelliceras mantelli or early Schloenbachia varians Biozone of the Lower Cenomanian

 

Morphological Features:

  • Highly variable coiling and ornamentation (as suggested by the name “varians”)
  • Typically displays strong, sinuous ribs with ventrolateral tubercles
  • Moderately involute with compressed whorls and a rounded or slightly keeled venter
  • Fine suture lines may be visible depending on preservation quality

 

Notable Points:

  • Schloenbachia varians subvarians is a diagnostic ammonite for the early Cenomanian and is crucial in biostratigraphic correlation across Europe
  • Yaverland is one of the most important fossil localities on the Isle of Wight, known for its rich Lower Cretaceous and early Upper Cretaceous faunas
  • Subspecies are rare and often display transitional morphological traits, making them scientifically significant

 

Why This Fossil is a Special Find:

  • Rare UK ammonite subspecies with strong biostratigraphic value
  • Sourced from a classic Isle of Wight locality
  • Excellent display specimen with striking ribbing and form
  • Supplied with a Certificate of Authenticity
  • 100% genuine and ethically sourced

 

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