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 8" UPTONIA jamesoni Fossil Ammonite – Lower Pliensbachian, Jurassic: Fresnay, Calvados, France – Alice Purnell Collection
RARE 8" UPTONIA jamesoni Fossil Ammonite – Lower Pliensbachian, Jurassic: Fresnay, Calvados, France – Alice Purnell Collection - Image 2
RARE 8" UPTONIA jamesoni Fossil Ammonite – Lower Pliensbachian, Jurassic: Fresnay, Calvados, France – Alice Purnell Collection - Image 3

RARE 8″ UPTONIA jamesoni Fossil Ammonite – Lower Pliensbachian, Jurassic: Fresnay, Calvados, France – Alice Purnell Collection

£240.00

A rare and visually striking specimen of the ammonite species Uptonia jamesoni, originating from the Lower Pliensbachian stage of the Jurassic period, and collected from Fresnay, Calvados, France. Measuring an impressive 8 inches, this fossil comes from the esteemed Alice Purnell Collection and represents a fine example of early Jurassic ammonite evolution.

Uptonia jamesoni is part of the family Polymorphitidae within the superfamily Eoderoceratoidea. It is characterised by its evolute shell, sharply ribbed flanks, and wide umbilicus. The ribs are strong and bifurcate from the umbilical edge, terminating at a keeled venter — typical features that distinguish this genus.

Geological & Scientific Details:

  • Scientific Name: Uptonia jamesoni
  • Fossil Type: Ammonite
  • Geological Period: Jurassic
  • Geological Stage: Lower Pliensbachian
  • Location Found: Fresnay, Calvados, France
  • Order: Ammonitida
  • Superfamily: Eoderoceratoidea
  • Family: Polymorphitidae
  • Morphological Features: Evolute coiling; strong bifurcating ribs; wide umbilicus; prominent keel
  • Depositional Environment: Shallow epicontinental marine basin typical of the Pliensbachian Western European shelf

This fossil ammonite is a valuable piece for collectors of classic European Jurassic ammonites, particularly from Normandy, a region famous for its early Jurassic fossil sites.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Please Note:

  • Scale Rule Squares / Cube = 1cm – please refer to the photos for full sizing
  • You will receive the exact fossil pictured
  • Sourced from the expertly curated Alice Purnell Collection

An exceptional ammonite from an iconic fossil location, combining scientific value with aesthetic appeal — ideal for collectors, educators, or as a standout display specimen.

(Actual as seen)

Out of stock

SKU: AF1227 Category:

Description

A rare and visually striking specimen of the ammonite species Uptonia jamesoni, originating from the Lower Pliensbachian stage of the Jurassic period, and collected from Fresnay, Calvados, France. Measuring an impressive 8 inches, this fossil comes from the esteemed Alice Purnell Collection and represents a fine example of early Jurassic ammonite evolution.

Uptonia jamesoni is part of the family Polymorphitidae within the superfamily Eoderoceratoidea. It is characterised by its evolute shell, sharply ribbed flanks, and wide umbilicus. The ribs are strong and bifurcate from the umbilical edge, terminating at a keeled venter — typical features that distinguish this genus.

Geological & Scientific Details:

  • Scientific Name: Uptonia jamesoni
  • Fossil Type: Ammonite
  • Geological Period: Jurassic
  • Geological Stage: Lower Pliensbachian
  • Location Found: Fresnay, Calvados, France
  • Order: Ammonitida
  • Superfamily: Eoderoceratoidea
  • Family: Polymorphitidae
  • Morphological Features: Evolute coiling; strong bifurcating ribs; wide umbilicus; prominent keel
  • Depositional Environment: Shallow epicontinental marine basin typical of the Pliensbachian Western European shelf

This fossil ammonite is a valuable piece for collectors of classic European Jurassic ammonites, particularly from Normandy, a region famous for its early Jurassic fossil sites.

All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.

Please Note:

  • Scale Rule Squares / Cube = 1cm – please refer to the photos for full sizing
  • You will receive the exact fossil pictured
  • Sourced from the expertly curated Alice Purnell Collection

An exceptional ammonite from an iconic fossil location, combining scientific value with aesthetic appeal — ideal for collectors, educators, or as a standout display specimen.

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.

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