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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Rare: Acanthopleuroceras maugenesti Fossil Ammonite – Lower Pliensbachian, Lower Jurassic, Radstock Somerset UK – Genuine + COA

£60.00

A rare and scientifically important Acanthopleuroceras maugenesti Fossil Ammonite, from the Lower Pliensbachian Stage of the Lower Jurassic, collected in Radstock, Somerset, United Kingdom. This ammonite is an excellent representative of the genus Acanthopleuroceras, recognised for its strong ribbing and distinctive shell morphology. The specimen shown in the photographs is the exact one you will receive and comes with a Certificate of Authenticity.

Fossil Type & Species:

  • Type: Ammonite (extinct marine cephalopod)
  • Species: Acanthopleuroceras maugenesti
  • Order: Ammonitida
  • Superfamily: Eoderoceratoidea
  • Family: Dactylioceratidae

Geological Context:

  • Period: Jurassic
  • Epoch/Stage: Lower Jurassic – Lower Pliensbachian (approx. 190.8 to 189 million years ago)
  • Biozone: Typically associated with the Maugenesti Subzone of the Jamesoni Zone, an important ammonite horizon in Lower Pliensbachian stratigraphy
  • Formation: Lower Lias Group
  • Depositional Environment: Shallow marine shelf with alternating marls and limestones, excellent for ammonite preservation

Locality:

  • Region: Radstock, Somerset, United Kingdom

Morphology & Features:

  • Evolute shell with wide umbilicus
  • Strong ribbing, with ribs bifurcating from the umbilical margin and crossing the venter
  • Robust ornamentation diagnostic of Acanthopleuroceras
  • Well-preserved whorl structure highlighting characteristic features

Scientific Notes:

  • Acanthopleuroceras maugenesti was first described by d’Orbigny (1844), a pioneering French palaeontologist
  • It is a key ammonite species for defining and correlating Lower Pliensbachian sequences in NW Europe, including the UK

Notable Details:

  • Rare British ammonite with bold ribbing and excellent preservation
  • 100% genuine, natural specimen – no restoration
  • Scale Reference: Each square or cube in the photo = 1cm. Please check the images for accurate sizing

Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. Each specimen is supplied with a Certificate of Authenticity. The fossil you see is the exact one you will receive.

 

This Acanthopleuroceras maugenesti ammonite is a rare and scientifically valuable fossil from the Lower Jurassic of Somerset – perfect for collectors, researchers, or natural history display.

 

(Actual as seen)

Only 1 left in stock

SKU: UF4302 Category:

Description

A rare and scientifically important Acanthopleuroceras maugenesti Fossil Ammonite, from the Lower Pliensbachian Stage of the Lower Jurassic, collected in Radstock, Somerset, United Kingdom. This ammonite is an excellent representative of the genus Acanthopleuroceras, recognised for its strong ribbing and distinctive shell morphology. The specimen shown in the photographs is the exact one you will receive and comes with a Certificate of Authenticity.

Fossil Type & Species:

  • Type: Ammonite (extinct marine cephalopod)
  • Species: Acanthopleuroceras maugenesti
  • Order: Ammonitida
  • Superfamily: Eoderoceratoidea
  • Family: Dactylioceratidae

Geological Context:

  • Period: Jurassic
  • Epoch/Stage: Lower Jurassic – Lower Pliensbachian (approx. 190.8 to 189 million years ago)
  • Biozone: Typically associated with the Maugenesti Subzone of the Jamesoni Zone, an important ammonite horizon in Lower Pliensbachian stratigraphy
  • Formation: Lower Lias Group
  • Depositional Environment: Shallow marine shelf with alternating marls and limestones, excellent for ammonite preservation

Locality:

  • Region: Radstock, Somerset, United Kingdom

Morphology & Features:

  • Evolute shell with wide umbilicus
  • Strong ribbing, with ribs bifurcating from the umbilical margin and crossing the venter
  • Robust ornamentation diagnostic of Acanthopleuroceras
  • Well-preserved whorl structure highlighting characteristic features

Scientific Notes:

  • Acanthopleuroceras maugenesti was first described by d’Orbigny (1844), a pioneering French palaeontologist
  • It is a key ammonite species for defining and correlating Lower Pliensbachian sequences in NW Europe, including the UK

Notable Details:

  • Rare British ammonite with bold ribbing and excellent preservation
  • 100% genuine, natural specimen – no restoration
  • Scale Reference: Each square or cube in the photo = 1cm. Please check the images for accurate sizing

Authenticity & Guarantee: All of our fossils are 100% genuine, responsibly sourced, and professionally curated. Each specimen is supplied with a Certificate of Authenticity. The fossil you see is the exact one you will receive.

 

This Acanthopleuroceras maugenesti ammonite is a rare and scientifically valuable fossil from the Lower Jurassic of Somerset – perfect for collectors, researchers, or natural history display.

 

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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