Turrilites Fossil Heteromorph Ammonite Partial Lower Cenomanian Cretaceous Sussex England with COA

Description

Rare Turrilites Heteromorph Ammonite Partial from Sussex

Offered here is a partial fossil of a Turrilites heteromorph ammonite, originating from the Lower Cenomanian stage of the Cretaceous period. This unique specimen was found in Sussex, United Kingdom, a region renowned for its chalk deposits and exceptional preservation of marine fossils. Heteromorph ammonites such as Turrilites are especially prized due to their unusual uncoiled, turreted shell structure, which stands in contrast to the tightly coiled shells of more typical ammonites. This partial fossil represents an important fragment of Earth’s evolutionary history, dating back approximately 100–94 million years.

As always, the specimen shown in the photographs is the exact fossil you will receive. The 1 cm scale cube in the image provides accurate sizing. This fossil is fully authenticated and comes with a Certificate of Authenticity, guaranteeing its genuineness and ensuring it will make a significant addition to any collection.

Geological Setting: Lower Cenomanian, Cretaceous

The Cenomanian stage, at the very beginning of the Late Cretaceous, spanned approximately 100.5 to 93.9 million years ago. During this time, large areas of present-day Europe were submerged under shallow seas, leading to widespread chalk deposition. The chalk cliffs of southern England, including those of Sussex, formed during this period and today yield some of the best-preserved Cretaceous marine fossils. Fossils from the Cenomanian provide crucial insights into marine life shortly before the evolutionary radiation of later ammonites and marine reptiles.

Taxonomic Classification

• Genus: Turrilites
• Type: Heteromorph ammonite
• Order: Ammonitida
• Superfamily: Turrilitoidea
• Family: Turrilitidae
• Age: Lower Cenomanian, Cretaceous (~100–94 million years ago)
• Locality: Sussex, United Kingdom

Morphological Features of Turrilites

The genus Turrilites is one of the best-known heteromorph ammonites, instantly recognisable by its turreted, helically coiled shell. Unlike the flat, planispiral shells of most ammonites, Turrilites developed elongated, screw-shaped shells with pronounced ribbing and tuberculation. This partial specimen exhibits the robust ribbed structure typical of the genus, making it easy to identify even from an incomplete preservation.

Distinctive traits include:

• Helical shell morphology, a defining feature of heteromorph ammonites.
• Strong ribs running obliquely across the shell surface.
• Tuberculate ornamentation, in some cases forming spiral ridges along the whorls.
• A partial fragment that retains diagnostic characteristics for classification.

Scientific and Collecting Importance

Heteromorph ammonites such as Turrilites are significant in palaeontology because they illustrate the remarkable diversity and experimentation in shell form that occurred during the Cretaceous. Their unusual coiling patterns challenge earlier ideas of ammonite evolution and ecology. Turrilites species are also excellent biostratigraphic markers, with several zones of the Cenomanian stage defined by their presence.

For collectors, this fossil offers a fascinating glimpse into the evolutionary experimentation of ammonites, making it an essential specimen for any collection focused on the Cretaceous or on heteromorph ammonites. Its rarity and geological significance ensure it will be an eye-catching display piece.

Key Details

• Fossil Type: Ammonite (heteromorph, partial)
• Genus: Turrilites
• Age: Lower Cenomanian, Cretaceous (~100–94 million years ago)
• Location: Sussex, United Kingdom
• Features: Partial turreted shell with ribbing
• Authenticity: Guaranteed, with Certificate of Authenticity

Authenticity and Guarantee

We guarantee that all of our fossils are 100% genuine specimens. This Turrilites ammonite fossil has been carefully chosen for its identifiable features, geological importance, and display potential. It is supplied with a Certificate of Authenticity and represents not just a fascinating collector’s item, but also a genuine piece of natural history, preserved for over 95 million years.