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Fossil Ammonite Proplanulites, Jurassic, Lower Callovian, Waterpark UK, Genuine Specimen with COA
Fossil Ammonite Proplanulites, Jurassic, Lower Callovian, Waterpark UK, Genuine Specimen with COA - Image 2

Fossil Ammonite Proplanulites, Jurassic, Lower Callovian, Waterpark UK, Genuine Specimen with COA

£18.00

This listing offers a scientifically interesting and visually appealing Fossil Ammonite of the genus Proplanulites from the Lower Callovian Stage of the Jurassic Period, collected at Waterpark, Ashton Keynes, United Kingdom. This is a carefully chosen specimen, with the actual fossil shown in the photographs — no substitutes.

For accurate scaling, each cube/square = 1cm. Please see photos for full size and detail of the fossil.

 

Key Geological and Scientific Information:

  • Genus: Proplanulites
  • Fossil Type: Ammonite (extinct marine cephalopod)
  • Geological Period: Jurassic
  • Geological Stage: Lower Callovian (Middle Jurassic)
  • Location: Waterpark, Ashton Keynes, Wiltshire, England, UK
  • Approximate Age: ~164 million years ago
  • Order: Ammonitida
  • Superfamily: Haploceratoidea (tentative based on genus attribution)
  • Family: Possible Tulitidae or related Haploceratid group (classification subject to revision)

 

Morphology Features: Proplanulites is known for its planulate (flat-sided) shell with compressed whorls, fine radial ribbing, and often a shallow umbilicus. The shell is usually evolute, meaning earlier whorls are partially visible, and the venter is rounded or slightly flattened. These features suggest streamlined adaptation to mid-water marine environments.

 

Depositional Environment: The fossil was found in marine deposits of the Kellaways Beds or similar Callovian clay-rich sediments at Waterpark. These represent low-energy, offshore depositional settings, ideal for preserving delicate ammonite shells in fine-grained sediments like claystone and marl.

 

Biostratigraphy & Zone (Tentative): Though Proplanulites is not a zone-defining taxon, it is typically associated with assemblages within the Lower Callovian, often overlapping with species such as Kepplerites galilaeii. Its occurrence helps refine ammonite zonation in British Callovian strata.

 

Scientific Significance: Proplanulites contributes to the broader understanding of ammonite diversity and morphological variation during the Callovian. Its subtle ornamentation and flattened profile make it an important piece in Middle Jurassic evolutionary studies.

 

Authenticity Guarantee: All fossils we sell are 100% genuine, carefully sourced, and come with a Certificate of Authenticity. This ensures the piece you receive is exactly as described, with proper geological provenance.

 

Add this classic Proplanulites ammonite to your collection today — a beautiful and scientifically meaningful example from the UK’s fossil-rich Jurassic heritage.

(Actual as seen)

Only 1 left in stock

SKU: UF4419 Category:

Description

This listing offers a scientifically interesting and visually appealing Fossil Ammonite of the genus Proplanulites from the Lower Callovian Stage of the Jurassic Period, collected at Waterpark, Ashton Keynes, United Kingdom. This is a carefully chosen specimen, with the actual fossil shown in the photographs — no substitutes.

For accurate scaling, each cube/square = 1cm. Please see photos for full size and detail of the fossil.

 

Key Geological and Scientific Information:

  • Genus: Proplanulites
  • Fossil Type: Ammonite (extinct marine cephalopod)
  • Geological Period: Jurassic
  • Geological Stage: Lower Callovian (Middle Jurassic)
  • Location: Waterpark, Ashton Keynes, Wiltshire, England, UK
  • Approximate Age: ~164 million years ago
  • Order: Ammonitida
  • Superfamily: Haploceratoidea (tentative based on genus attribution)
  • Family: Possible Tulitidae or related Haploceratid group (classification subject to revision)

 

Morphology Features: Proplanulites is known for its planulate (flat-sided) shell with compressed whorls, fine radial ribbing, and often a shallow umbilicus. The shell is usually evolute, meaning earlier whorls are partially visible, and the venter is rounded or slightly flattened. These features suggest streamlined adaptation to mid-water marine environments.

 

Depositional Environment: The fossil was found in marine deposits of the Kellaways Beds or similar Callovian clay-rich sediments at Waterpark. These represent low-energy, offshore depositional settings, ideal for preserving delicate ammonite shells in fine-grained sediments like claystone and marl.

 

Biostratigraphy & Zone (Tentative): Though Proplanulites is not a zone-defining taxon, it is typically associated with assemblages within the Lower Callovian, often overlapping with species such as Kepplerites galilaeii. Its occurrence helps refine ammonite zonation in British Callovian strata.

 

Scientific Significance: Proplanulites contributes to the broader understanding of ammonite diversity and morphological variation during the Callovian. Its subtle ornamentation and flattened profile make it an important piece in Middle Jurassic evolutionary studies.

 

Authenticity Guarantee: All fossils we sell are 100% genuine, carefully sourced, and come with a Certificate of Authenticity. This ensures the piece you receive is exactly as described, with proper geological provenance.

 

Add this classic Proplanulites ammonite to your collection today — a beautiful and scientifically meaningful example from the UK’s fossil-rich Jurassic heritage.

Additional information

Era

Jurassic
Origin

United Kingdom

Jurassic Information

The Jurassic Period (201–145 million years ago) was the golden age of dinosaurs, with iconic species like Brachiosaurus, Stegosaurus, and Allosaurus dominating the land. It was a time of warm, humid climates, with high sea levels that created vast shallow seas, supporting abundant marine reptiles, ammonites, and early coral reefs. The first birds, such as Archaeopteryx, evolved from small theropod dinosaurs, while early mammals remained small and nocturnal. Lush forests of cycads, conifers, and ferns covered the land, providing food for giant herbivores. The breakup of the supercontinent Pangaea accelerated, shaping Earth's geography and setting the stage for the diverse ecosystems of the Cretaceous.

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