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 5.5″ Amaltheus stokesi Fossil Ammonite | Aalenian Jurassic | South Petherton Somerset UK | Certified Authentic Specimen
£66.00
A rare and beautifully preserved 5.5-inch fossil ammonite: Amaltheus stokesi, from the Upper Pliensbachian Stage of the Early Jurassic, collected near South Petherton, Somerset, United Kingdom. This species is renowned for its striking ribbing and whorl structure, making it both scientifically significant and highly collectible.
The ammonite in this listing is the exact specimen you will receive, shown clearly in photographs with a 1cm scale cube for accurate size reference. Please refer to images for full measurements and condition.
Geological & Palaeontological Information:
Fossil Type: Ammonite
Species:Amaltheus stokesi (formally described by Sowerby, 1815)
Geological Period: Jurassic
Stage: Upper Pliensbachian (~189 to 183 million years ago)
Location: South Petherton, Somerset, UK
Depositional Environment: Shallow marine setting with silty clays and limestones, part of the Upper Lias (Amaltheus Beds)
Order: Ammonitida
Superfamily: Eoderoceratoidea
Family: Amaltheidae
Biozone (Inferred):Amaltheus margaritatus Zone – a key biostratigraphic zone of the Upper Pliensbachian
Morphological Features:
Strongly ribbed, finely detailed whorls
Planispiral shell with deep umbilicus
Sinuous ribs crossing the venter uninterrupted
Coiling is involute to moderately evolute depending on growth stage
Classic shell symmetry associated with the genus Amaltheus
Notable Points:
Amaltheus stokesi is a characteristic species of the Upper Pliensbachian and widely used in ammonite zonation across Europe
Fossils from the South Petherton area are uncommon and increasingly difficult to find in this size and condition
An excellent specimen for collectors, researchers, or educational display
Why This Fossil is Special:
Rare ammonite species from a historically rich UK locality
Excellent preservation of shell form and ornamentation
Supplied with a Certificate of Authenticity
100% genuine and ethically sourced specimen
Ideal for display, stratigraphic reference, or collection
A rare and beautifully preserved 5.5-inch fossil ammonite: Amaltheus stokesi, from the AalenianStage of the Early Jurassic, collected near South Petherton, Somerset, United Kingdom. This species is renowned for its striking ribbing and whorl structure, making it both scientifically significant and highly collectible.
The ammonite in this listing is the exact specimen you will receive, shown clearly in photographs with a 1cm scale cube for accurate size reference. Please refer to images for full measurements and condition.
Geological & Palaeontological Information:
Fossil Type: Ammonite
Species:Amaltheus stokesi (formally described by Sowerby, 1815)
Geological Period: Jurassic
Stage: Aalenian
Location: South Petherton, Somerset, UK
Depositional Environment: Shallow marine setting with silty clays and limestones, part of the Upper Lias (Amaltheus Beds)
Order: Ammonitida
Superfamily: Eoderoceratoidea
Family: Amaltheidae
Biozone (Inferred):Amaltheus margaritatus Zone – a key biostratigraphic zone of the Aalenian
Morphological Features:
Strongly ribbed, finely detailed whorls
Planispiral shell with deep umbilicus
Sinuous ribs crossing the venter uninterrupted
Coiling is involute to moderately evolute depending on growth stage
Classic shell symmetry associated with the genus Amaltheus
Notable Points:
Amaltheus stokesi is a characteristic species of the Aalenian and widely used in ammonite zonation across Europe
Fossils from the South Petherton area are uncommon and increasingly difficult to find in this size and condition
An excellent specimen for collectors, researchers, or educational display
Why This Fossil is Special:
Rare ammonite species from a historically rich UK locality
Excellent preservation of shell form and ornamentation
Supplied with a Certificate of Authenticity
100% genuine and ethically sourced specimen
Ideal for display, stratigraphic reference, or collection
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