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 10" Eothopicoceras conybearei Fossil Ammonite – Lower Sinemurian, Jurassic – Shepton Mallet UK – COA – Alice Purnell Collection
RARE 10" Eothopicoceras conybearei Fossil Ammonite – Lower Sinemurian, Jurassic – Shepton Mallet UK – COA – Alice Purnell Collection - Image 2
RARE 10" Eothopicoceras conybearei Fossil Ammonite – Lower Sinemurian, Jurassic – Shepton Mallet UK – COA – Alice Purnell Collection - Image 3

RARE 10″ Eothopicoceras conybearei Fossil Ammonite – Lower Sinemurian, Jurassic – Shepton Mallet UK – COA – Alice Purnell Collection

£1,440.00

Presenting an extraordinary and rare 10-inch specimen of Eothopicoceras conybearei, a remarkable ammonite fossil from the Lower Sinemurian Stage of the Early Jurassic, found in the classic fossil locality of Shepton Mallet, Somerset, United Kingdom. This ammonite, showcasing its full coiled structure and detailed ribbing, is from the prestigious Alice Purnell Collection. The photograph shows the exact specimen you will receive.

Geological Context:

  • Species: Eothopicoceras conybearei
  • Geological Period: Jurassic
  • Stage: Lower Sinemurian (~199 – 196 million years ago)
  • Location: Shepton Mallet, Somerset, United Kingdom
  • Depositional Environment: Shallow marine shelf with carbonate-rich mudstones and silts, deposited during a period of marine transgression in post-Triassic recovery ecosystems

Taxonomic Classification:

  • Family: Echioceratidae
  • Superfamily: Eoderoceratoidea
  • Order: Ammonitida
  • Suborder: Ammonitina
  • Likely formally described by: S.S. Buckman (though authorship is debated or cited variably in early literature)

Morphological Features:

Eothopicoceras conybearei is distinguished by its evolute shell, prominent ribbing, and wide, open umbilicus. The ribs are sharp and consistent, bifurcating near the umbilical edge and extending across the flanks. The whorls are relatively compressed but clearly delineated, making this genus both visually striking and important in ammonite morphological evolution.

Stratigraphic and Scientific Significance:

This species is commonly associated with Sinemurian ammonite biozones and contributes to regional and intercontinental correlations of Lower Jurassic strata. It helps mark an evolutionary stage in early ammonite diversification following the end-Triassic extinction.

Additional Details:

  • All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
  • Scale Rule Squares / Cube = 1cm. Please refer to the photo for full sizing and detail.
  • From the scientifically curated Alice Purnell Collection.

This is a top-grade collector’s item—a fossil that bridges visual beauty and scientific depth. Perfect for display, study, or long-term collection.

Own a stunning example of Early Jurassic marine life today.

(Actual as seen)

Includes a fully hand-signed Premium Certificate of Authenticity.

Only 1 left in stock

SKU: AF1245 Categories: ,

Description

Presenting an extraordinary and rare 10-inch specimen of Eothopicoceras conybearei, a remarkable ammonite fossil from the Lower Sinemurian Stage of the Early Jurassic, found in the classic fossil locality of Shepton Mallet, Somerset, United Kingdom. This ammonite, showcasing its full coiled structure and detailed ribbing, is from the prestigious Alice Purnell Collection. The photograph shows the exact specimen you will receive.

Geological Context:

  • Species: Eothopicoceras conybearei
  • Geological Period: Jurassic
  • Stage: Lower Sinemurian (~199 – 196 million years ago)
  • Location: Shepton Mallet, Somerset, United Kingdom
  • Depositional Environment: Shallow marine shelf with carbonate-rich mudstones and silts, deposited during a period of marine transgression in post-Triassic recovery ecosystems

Taxonomic Classification:

  • Family: Echioceratidae
  • Superfamily: Eoderoceratoidea
  • Order: Ammonitida
  • Suborder: Ammonitina
  • Likely formally described by: S.S. Buckman (though authorship is debated or cited variably in early literature)

Morphological Features:

Eothopicoceras conybearei is distinguished by its evolute shell, prominent ribbing, and wide, open umbilicus. The ribs are sharp and consistent, bifurcating near the umbilical edge and extending across the flanks. The whorls are relatively compressed but clearly delineated, making this genus both visually striking and important in ammonite morphological evolution.

Stratigraphic and Scientific Significance:

This species is commonly associated with Sinemurian ammonite biozones and contributes to regional and intercontinental correlations of Lower Jurassic strata. It helps mark an evolutionary stage in early ammonite diversification following the end-Triassic extinction.

Additional Details:

  • All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.
  • Scale Rule Squares / Cube = 1cm. Please refer to the photo for full sizing and detail.
  • From the scientifically curated Alice Purnell Collection.

This is a top-grade collector’s item—a fossil that bridges visual beauty and scientific depth. Perfect for display, study, or long-term collection.

Own a stunning example of Early Jurassic marine life today.

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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