Fossils for Sale - High-quality BRITISH and WORLDWIDE Fossils. An impressive selection of fossils, including Ammonites, Trilobites, Belemnites, Fossil Fish, Fossil Shark Teeth, Fossilised Insects in Amber, Dinosaurs, and Reptiles. UK Fossils was formed in 1988 and collects and preps our own fossils in the heart of the Jurassic Coast, collecting fossils from Lyme Regis, Charmouth and Somerset. Our passion for fossils is reflected in our carefully curated collection, which includes some of the rarest and most unique specimens available.
RARE Otosphinctes rudicosta Fossil Ammonite – Upper Oxfordian – Jurassic – Deux-Sèvres, France – Authentic with Certificate
£14.40
This listing features a RARE fossil ammonite of the species Otosphinctes rudicosta, an exceptional example from the Upper Oxfordian Stage of the Late Jurassic, discovered in Deux-Sèvres, France. This specimen represents a genuine piece of Earth’s ancient marine history, with its distinctive shell morphology preserved in stunning detail.
Fossil Type: Ammonite (extinct marine mollusc)
Species: Otosphinctes rudicosta
Geological Period: Jurassic
Geological Stage: Upper Oxfordian (~157 million years ago)
This listing features a RARE fossil ammonite of the species Otosphinctes rudicosta, an exceptional example from the Upper Oxfordian Stage of the Late Jurassic, discovered in Deux-Sèvres, France. This specimen represents a genuine piece of Earth’s ancient marine history, with its distinctive shell morphology preserved in stunning detail.
Fossil Type: Ammonite (extinct marine mollusc)
Species: Otosphinctes rudicosta
Geological Period: Jurassic
Geological Stage: Upper Oxfordian (~157 million years ago)
Coarsely ribbed, evolute shell with bold, radiating ornamentation
Broad, widely spaced ribs – a defining feature of rudicosta
Strongly ornamented whorls with shallow umbilicus
Notable:
Otosphinctes species serve as excellent regional zonal fossils in the Oxfordian stage
The genus is a marker for biostratigraphic studies in western Europe’s Upper Jurassic stratigraphy
Biozone:
Often placed within the Otosphinctes subzone of the Gregoriceras transversarium Zone
Depositional Environment:
Deposited in shallow, warm, carbonate-dominated epicontinental seas of the Tethyan margin
The fossil is preserved in fine-grained marine limestone or marl, indicating low-energy marine conditions
Identification:
Typically catalogued in French Jurassic ammonite monographs such as those by Enay and Mangold
Species initially described in 19th to early 20th-century European paleontological literature
Why This Specimen is Unique:
Classic French locality – a well-documented Upper Jurassic fossil-bearing region
Strong ribbing and preservation make it ideal for display or study
Rare species not commonly encountered in general fossil trade
Perfect for collectors of European ammonites or stratigraphic index fossils
Additional Details:
All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity
Scale Rule Squares / Cube = 1cm: Full sizing please see photo
You will receive the exact fossil shown – each specimen is individually selected and photographed
Additional information
Era
Jurassic
Origin
France
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.
Reviews
There are no reviews yet.
Only logged in customers who have purchased this product may leave a review.
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional
Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
Reviews
There are no reviews yet.