Rare Turrilites desnoyersi Heteromorph Fossil Ammonite Cenomanian Cretaceous Beachy Head UK with COA

Description

Rare Turrilites desnoyersi Heteromorph Ammonite from Beachy Head

This specimen is a rare Turrilites desnoyersi heteromorph fossil ammonite, collected from the Cenomanian Stage of the Cretaceous Period, at Beachy Head, Eastbourne, United Kingdom. Dating to approximately 100–94 million years ago, this ammonite is a striking example of the unusual heteromorph group, whose irregular shell coiling makes them among the most distinctive ammonites of the Cretaceous seas.

All our fossils are 100% genuine specimens and are accompanied by a Certificate of Authenticity. The photographs show the actual piece you will receive, with a 1cm scale cube and rule squares for accurate sizing.

Geological Age and Provenance

This fossil comes from the Cenomanian Stage, the earliest stage of the Late Cretaceous, during which global sea levels were exceptionally high. These conditions created shallow epicontinental seas across Europe, providing the perfect environment for ammonites such as Turrilites to thrive.

The cliffs at Beachy Head, Eastbourne, form part of the world-famous White Chalk deposits of southern England, which are renowned for their exceptional fossil content. Ammonites from this locality are not only scientifically significant but also represent an important chapter in Britain’s geological heritage.

Fossil Type and Scientific Classification

• Genus: Turrilites
• Species: Turrilites desnoyersi
• Order: Ammonitida
• Superfamily: Turrilitoidea
• Family: Turrilitidae

Turrilites desnoyersi is an important heteromorph ammonite species and serves as a valuable index fossil for Cenomanian deposits. Its distinctive coiling and ornamentation make it instantly recognisable and highly significant for biostratigraphic correlation.

Morphological Features

Heteromorph ammonites like Turrilites desnoyersi are notable for their departure from the standard coiled ammonite form. Their shells grew in a helical fashion, producing a tower-like spiral that sets them apart visually and scientifically.

Key features include:

• Helicoidal Shell Form: The shell grows upward in a spiral column rather than forming a flat coil.
• Prominent Ribbing: Strong ribs run across the flanks, giving the fossil a well-defined and sculptural appearance.
• Tuberculation: Small nodes or tubercles may occur along rib crests, adding to its distinctive texture.
• Keel Development: The venter often displays a keel, which contributed to hydrodynamic function.

These characteristics not only make Turrilites highly distinctive but also help palaeontologists to classify specimens accurately within the Cenomanian stratigraphy.

Scientific and Collector Importance

Turrilites desnoyersi is stratigraphically significant as it defines important ammonite biozones within the Cenomanian Stage. Its distribution allows geologists to correlate rock layers across wide areas of Europe, making it vital for Cretaceous research.

For collectors, the rarity of well-preserved Turrilites from Beachy Head makes them especially desirable. With ongoing coastal erosion and restricted collecting opportunities, fine specimens from this locality are becoming increasingly scarce, adding to their value and appeal.

Display and Educational Value

This specimen has been carefully chosen for its preservation, diagnostic features, and striking appearance. The tower-like heteromorph structure makes it a dramatic fossil to display in any collection, while its scientific importance ensures it is also an excellent teaching specimen.

Whether showcased in a private collection, used in an educational setting, or featured in a museum, this rare Turrilites desnoyersi ammonite from Beachy Head captures the diversity of ammonite evolution during the Cretaceous seas. Its rarity, provenance, and unique morphology make it an exceptional addition for both fossil enthusiasts and serious collectors.