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RARE 9.5" Lewesiceras mantelii Fossil Chalk Ammonite | Turonian Cretaceous | Eastbourne UK | Alice Purnell Collection
RARE 9.5" Lewesiceras mantelii Fossil Chalk Ammonite | Turonian Cretaceous | Eastbourne UK | Alice Purnell Collection - Image 2
RARE 9.5" Lewesiceras mantelii Fossil Chalk Ammonite | Turonian Cretaceous | Eastbourne UK | Alice Purnell Collection - Image 3

RARE 9.5″ Lewesiceras mantelii Fossil Chalk Ammonite | Turonian Cretaceous | Eastbourne UK | Alice Purnell Collection

£60.00

This listing showcases a RARE 9.5-inch fossil ammonite, Lewesiceras mantelii, from the Turonian Stage of the Cretaceous Period, discovered in the chalk cliffs near Eastbourne, Sussex, United Kingdom. This well-preserved and scientifically significant specimen is part of the prestigious Alice Purnell Collection, renowned for its collector-grade and authenticated fossils.

Geological Details:

  • Locality: Eastbourne, Sussex, United Kingdom
  • Geological Period: Cretaceous
  • Geological Stage: Turonian (~93.9 to 89.8 million years ago)
  • Depositional Environment: Shallow marine chalk sea, with fine carbonate sedimentation from plankton-rich waters
  • Formation: Upper Chalk Formation, White Chalk Subgroup (southern England)

Paleontological Context: Lewesiceras mantelii is one of the largest and most recognisable ammonites from the Pachydiscidae Family, serving as a key biostratigraphic marker for the Turonian Stage. Its global distribution and distinctive morphology make it valuable for regional and international stratigraphic correlation.

  • Order: Ammonitida
  • Superfamily: Desmoceratoidea
  • Family: Pachydiscidae
  • Genus: Lewesiceras
  • Species: mantelii
  • Biozone: Lewesiceras peramplum Zone (Middle–Upper Turonian)
  • Formally Described by: J. Sowerby, 1817

Morphological Features:

  • Strong, involute coiling with broad whorls
  • Coarse, prominent ribbing across the flanks
  • Deep umbilicus and thick shell profile
  • Chalk preservation typical of the Eastbourne cliffs, with light cream matrix and natural patina

Notable Characteristics:

  • Impressive size (9.5″) and high-quality preservation
  • From a classic UK chalk fossil locality
  • Sourced from the well-regarded Alice Purnell Collection, offering scientific and collector confidence

Authenticity & Presentation:

  • 100% genuine fossil, not a reproduction
  • Includes a Certificate of Authenticity
  • Photo shows the actual specimen you will receive
  • Scale cube = 1cm included in photo for reference

Additional Notes: This large and classic British ammonite is a prime example of Lewesiceras mantelii, combining beauty, stratigraphic significance, and provenance. A museum-worthy addition for collectors, educators, and institutions with an interest in the Upper Cretaceous of Europe.

 

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

(Actual as seen)

Out of stock

SKU: AF1376 Category:

Description

This listing showcases a RARE 9.5-inch fossil ammonite, Lewesiceras mantelii, from the Turonian Stage of the Cretaceous Period, discovered in the chalk cliffs near Eastbourne, Sussex, United Kingdom. This well-preserved and scientifically significant specimen is part of the prestigious Alice Purnell Collection, renowned for its collector-grade and authenticated fossils.

Geological Details:

  • Locality: Eastbourne, Sussex, United Kingdom
  • Geological Period: Cretaceous
  • Geological Stage: Turonian (~93.9 to 89.8 million years ago)
  • Depositional Environment: Shallow marine chalk sea, with fine carbonate sedimentation from plankton-rich waters
  • Formation: Upper Chalk Formation, White Chalk Subgroup (southern England)

Paleontological Context: Lewesiceras mantelii is one of the largest and most recognisable ammonites from the Pachydiscidae Family, serving as a key biostratigraphic marker for the Turonian Stage. Its global distribution and distinctive morphology make it valuable for regional and international stratigraphic correlation.

  • Order: Ammonitida
  • Superfamily: Desmoceratoidea
  • Family: Pachydiscidae
  • Genus: Lewesiceras
  • Species: mantelii
  • Biozone: Lewesiceras peramplum Zone (Middle–Upper Turonian)
  • Formally Described by: J. Sowerby, 1817

Morphological Features:

  • Strong, involute coiling with broad whorls
  • Coarse, prominent ribbing across the flanks
  • Deep umbilicus and thick shell profile
  • Chalk preservation typical of the Eastbourne cliffs, with light cream matrix and natural patina

Notable Characteristics:

  • Impressive size (9.5″) and high-quality preservation
  • From a classic UK chalk fossil locality
  • Sourced from the well-regarded Alice Purnell Collection, offering scientific and collector confidence

Authenticity & Presentation:

  • 100% genuine fossil, not a reproduction
  • Includes a Certificate of Authenticity
  • Photo shows the actual specimen you will receive
  • Scale cube = 1cm included in photo for reference

Additional Notes: This large and classic British ammonite is a prime example of Lewesiceras mantelii, combining beauty, stratigraphic significance, and provenance. A museum-worthy addition for collectors, educators, and institutions with an interest in the Upper Cretaceous of Europe.

 

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

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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