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 Acanthoceras stephensoni Ammonite Fossil | Lower Cenomanian Cretaceous | Eagle Ford, Texas USA | Genuine Specimen w/ COA
£62.40Original price was: £62.40.£55.20Current price is: £55.20.
Discover a rare and beautifully preserved Acanthoceras stephensoni fossil ammonite from the Lower Cenomanian stage of the Cretaceous period, unearthed in the renowned Eagle Ford Formation of Texas, USA.
This striking fossil is a 100% genuine specimen, professionally identified and accompanied by a Certificate of Authenticity. The listing includes a photo of the actual piece you will receive, carefully selected for its preservation quality and scientific value. A 1cm square scale rule is shown in the photo for accurate sizing reference.
Geological & Scientific Information:
Species: Acanthoceras stephensoni
Type: Fossil Ammonite (extinct marine cephalopod)
Age: Approximately 95–100 million years old
Geological Period: Cretaceous
Stage: Lower Cenomanian
Formation: Eagle Ford Formation
Location Found: Texas, USA
Order: Ammonitida
Superfamily: Acanthoceratoidea
Family: Acanthoceratidae
Depositional Environment: Marine shelf, mid-depth open marine settings with moderate to low energy—ideal for ammonite habitation and fossilisation.
Morphological Features: Strongly ribbed, thick whorled shell with tuberculate ornamentation and involute coiling typical of the genus; this specimen shows excellent ribbing and partial suture preservation.
Paleoenvironmental Significance: Ammonites like Acanthoceras are key biostratigraphic markers and help define biozones within the Cenomanian.
This piece is both a scientifically valuable collector’s fossil and a stunning natural display. Fossils from the Eagle Ford Group are renowned for their excellent preservation and historic relevance in understanding the marine ecosystems of the Cretaceous Western Interior Seaway.
Why Buy From Us?
All fossils are authentic specimens carefully curated by experts.
Each item is sold with a Certificate of Authenticity.
What you see is what you get—actual photo of the specimen provided.
Ideal for collectors, educators, and natural history enthusiasts.
Add this rare ammonite to your collection today and own a piece of Earth’s deep-time marine history!
Discover a rare and beautifully preserved Acanthoceras stephensoni fossil ammonite from the Lower Cenomanian stage of the Cretaceous period, unearthed in the renowned Eagle Ford Formation of Texas, USA.
This striking fossil is a 100% genuine specimen, professionally identified and accompanied by a Certificate of Authenticity. The listing includes a photo of the actual piece you will receive, carefully selected for its preservation quality and scientific value. A 1cm square scale rule is shown in the photo for accurate sizing reference.
Geological & Scientific Information:
Species: Acanthoceras stephensoni
Type: Fossil Ammonite (extinct marine cephalopod)
Age: Approximately 95–100 million years old
Geological Period: Cretaceous
Stage: Lower Cenomanian
Formation: Eagle Ford Formation
Location Found: Texas, USA
Order: Ammonitida
Superfamily: Acanthoceratoidea
Family: Acanthoceratidae
Depositional Environment: Marine shelf, mid-depth open marine settings with moderate to low energy—ideal for ammonite habitation and fossilisation.
Morphological Features: Strongly ribbed, thick whorled shell with tuberculate ornamentation and involute coiling typical of the genus; this specimen shows excellent ribbing and partial suture preservation.
Paleoenvironmental Significance: Ammonites like Acanthoceras are key biostratigraphic markers and help define biozones within the Cenomanian.
This piece is both a scientifically valuable collector’s fossil and a stunning natural display. Fossils from the Eagle Ford Group are renowned for their excellent preservation and historic relevance in understanding the marine ecosystems of the Cretaceous Western Interior Seaway.
Why Buy From Us?
All fossils are authentic specimens carefully curated by experts.
Each item is sold with a Certificate of Authenticity.
What you see is what you get—actual photo of the specimen provided.
Ideal for collectors, educators, and natural history enthusiasts.
Add this rare ammonite to your collection today and own a piece of Earth’s deep-time marine history!
Additional information
Era
Cretaceous
Origin
USA
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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