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RARE Turrilites acutus Heteromorph Fossil Ammonite – Lower Cenomanian, Cretaceous – Glynde UK – COA – Alice Purnell Collection
RARE Turrilites acutus Heteromorph Fossil Ammonite – Lower Cenomanian, Cretaceous – Glynde UK – COA – Alice Purnell Collection - Image 2

RARE Turrilites acutus Heteromorph Fossil Ammonite – Lower Cenomanian, Cretaceous – Glynde UK – COA – Alice Purnell Collection

Original price was: £24.00.Current price is: £21.60.

A rare and beautifully preserved specimen of Turrilites acutus, an iconic heteromorph ammonite from the Lower Cenomanian Stage of the Cretaceous Period, found at Glynde, East Sussex, United Kingdom. Part of the esteemed Alice Purnell Collection, this fossil is a prime example of the striking uncoiled shell morphology typical of the genus Turrilites. The photo displays the exact fossil you will receive.

Geological Context:

  • Species: Turrilites acutus
  • Geological Period: Cretaceous
  • Stage: Lower Cenomanian (~100.5 – 96 million years ago)
  • Location: Glynde, East Sussex, UK
  • Depositional Environment: Marine shelf within a subtropical shallow sea, dominated by marl and early chalk deposition during a global sea-level highstand

Taxonomic Classification:

  • Family: Turrilitidae
  • Superfamily: Turrilitoidea
  • Order: Ammonitida
  • Suborder: Ancyloceratina
  • Formally Described By: Passy, 1832

Morphological Features:

Turrilites acutus is known for its tall, tightly coiled spire with smooth, almost cylindrical whorls. Compared to other species in the genus, it has relatively weak ornamentation and a slender profile—giving it the name “acutus.” The ribs are fine and may fade in mature individuals, while the body chamber continues the helical trend. This shell morphology suggests a planktonic or slow-drifting lifestyle, quite different from the more hydrodynamic planispiral ammonites.

Stratigraphic Importance:

Turrilites acutus is a well-established index fossil for the Lower Cenomanian of Europe. It plays an important role in biostratigraphic correlation of early Late Cretaceous marine sequences, especially in association with the ammonite zones of the Mantelliceras lineage.

Additional Details:

  • All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
  • Scale Rule Squares / Cube = 1cm. Full sizing visible in the photo.
  • This piece is part of the highly regarded Alice Purnell Collection.

This heteromorph ammonite offers both visual intrigue and palaeontological value, making it ideal for collectors, educators, or anyone captivated by Earth’s deep-time marine history.

Secure this unique fossil from the ancient seas of Glynde today.

(Actual as seen)

Only 1 left in stock

SKU: AF1326 Category:

Description

A rare and beautifully preserved specimen of Turrilites acutus, an iconic heteromorph ammonite from the Lower Cenomanian Stage of the Cretaceous Period, found at Glynde, East Sussex, United Kingdom. Part of the esteemed Alice Purnell Collection, this fossil is a prime example of the striking uncoiled shell morphology typical of the genus Turrilites. The photo displays the exact fossil you will receive.

Geological Context:

  • Species: Turrilites acutus
  • Geological Period: Cretaceous
  • Stage: Lower Cenomanian (~100.5 – 96 million years ago)
  • Location: Glynde, East Sussex, UK
  • Depositional Environment: Marine shelf within a subtropical shallow sea, dominated by marl and early chalk deposition during a global sea-level highstand

Taxonomic Classification:

  • Family: Turrilitidae
  • Superfamily: Turrilitoidea
  • Order: Ammonitida
  • Suborder: Ancyloceratina
  • Formally Described By: Passy, 1832

Morphological Features:

Turrilites acutus is known for its tall, tightly coiled spire with smooth, almost cylindrical whorls. Compared to other species in the genus, it has relatively weak ornamentation and a slender profile—giving it the name “acutus.” The ribs are fine and may fade in mature individuals, while the body chamber continues the helical trend. This shell morphology suggests a planktonic or slow-drifting lifestyle, quite different from the more hydrodynamic planispiral ammonites.

Stratigraphic Importance:

Turrilites acutus is a well-established index fossil for the Lower Cenomanian of Europe. It plays an important role in biostratigraphic correlation of early Late Cretaceous marine sequences, especially in association with the ammonite zones of the Mantelliceras lineage.

Additional Details:

  • All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
  • Scale Rule Squares / Cube = 1cm. Full sizing visible in the photo.
  • This piece is part of the highly regarded Alice Purnell Collection.

This heteromorph ammonite offers both visual intrigue and palaeontological value, making it ideal for collectors, educators, or anyone captivated by Earth’s deep-time marine history.

Secure this unique fossil from the ancient seas of Glynde today.

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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