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.

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Amaltheus stokesi Somerset Fossil Ammonite, Beacon Limestone Jurassic, Ilminster UK – Genuine Specimen with COA
Amaltheus stokesi Somerset Fossil Ammonite, Beacon Limestone Jurassic, Ilminster UK – Genuine Specimen with COA - Image 2

Amaltheus stokesi Somerset Fossil Ammonite, Beacon Limestone Jurassic, Ilminster UK – Genuine Specimen with COA

£43.20

Offered here is an excellent Amaltheus stokesi fossil ammonite, collected from the well-known Beacon Limestone Formation near Ilminster, Somerset, United Kingdom. This specimen originates from the Lower Jurassic Period, making it an impressive addition to any fossil collection.

Taxonomic Classification:

  • Genus: Amaltheus
  • Species: stokesi
  • Order: Ammonitida
  • Superfamily: Eoderoceratoidea
  • Family: Amaltheidae
  • First described in the 19th century, Amaltheus stokesi is a distinctive and stratigraphically important ammonite species

Geological Context:

  • Formation: Beacon Limestone
  • Stage: Upper Pliensbachian, Lower Jurassic
  • Biozone: Amaltheus stokesi Zone (or Amaltheus margaritatus Zone depending on local correlation)
  • Age: Approximately 190 million years old
  • Location: Ilminster, Somerset, UK
  • Depositional Environment: Shallow marine shelf, with deposition of fine-grained limestones and marls ideal for fossil preservation

Morphological Features:

  • Evolute coiling with wide umbilicus and visible inner whorls
  • Delicately ribbed flanks, often bifurcating or branching toward the venter
  • Narrow venter with occasional faint keel
  • May preserve fine growth lines and suture patterns in detail

Notable Scientific Value:

  • Amaltheus stokesi is a key index fossil for the Upper Pliensbachian globally
  • Its distinct morphology and widespread distribution make it a valuable species for regional and international correlation of Lower Jurassic rocks
  • The Ilminster area is well known for providing high-quality fossil specimens from the Jurassic seas of southern England

The specimen is pictured with a 1cm scale cube for accurate measurement. The exact fossil shown in the photo is the one you will receive, selected for both scientific interest and display quality.

Authenticity Guaranteed: All of our fossils are 100% genuine natural specimens, and every purchase includes a Certificate of Authenticity. Ideal for display, study, or as part of a high-quality fossil collection.

Please examine all photos for condition and size reference. A superb opportunity to acquire a scientifically important and aesthetically beautiful ammonite from Britain’s Jurassic past.

(Actual as seen)

Only 1 left in stock

SKU: UF3863 Category:

Description

Offered here is an excellent Amaltheus stokesi fossil ammonite, collected from the well-known Beacon Limestone Formation near Ilminster, Somerset, United Kingdom. This specimen originates from the Lower Jurassic Period, making it an impressive addition to any fossil collection.

Taxonomic Classification:

  • Genus: Amaltheus
  • Species: stokesi
  • Order: Ammonitida
  • Superfamily: Eoderoceratoidea
  • Family: Amaltheidae
  • First described in the 19th century, Amaltheus stokesi is a distinctive and stratigraphically important ammonite species

Geological Context:

  • Formation: Beacon Limestone
  • Stage: Upper Pliensbachian, Lower Jurassic
  • Biozone: Amaltheus stokesi Zone (or Amaltheus margaritatus Zone depending on local correlation)
  • Age: Approximately 190 million years old
  • Location: Ilminster, Somerset, UK
  • Depositional Environment: Shallow marine shelf, with deposition of fine-grained limestones and marls ideal for fossil preservation

Morphological Features:

  • Evolute coiling with wide umbilicus and visible inner whorls
  • Delicately ribbed flanks, often bifurcating or branching toward the venter
  • Narrow venter with occasional faint keel
  • May preserve fine growth lines and suture patterns in detail

Notable Scientific Value:

  • Amaltheus stokesi is a key index fossil for the Upper Pliensbachian globally
  • Its distinct morphology and widespread distribution make it a valuable species for regional and international correlation of Lower Jurassic rocks
  • The Ilminster area is well known for providing high-quality fossil specimens from the Jurassic seas of southern England

The specimen is pictured with a 1cm scale cube for accurate measurement. The exact fossil shown in the photo is the one you will receive, selected for both scientific interest and display quality.

Authenticity Guaranteed: All of our fossils are 100% genuine natural specimens, and every purchase includes a Certificate of Authenticity. Ideal for display, study, or as part of a high-quality fossil collection.

Please examine all photos for condition and size reference. A superb opportunity to acquire a scientifically important and aesthetically beautiful ammonite from Britain’s Jurassic past.

Additional information

Era

Jurassic
Origin

United Kingdom

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.

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