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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Very rare 8" sonninia adicra fossil ammonite – lower bajocian, jurassic, stoke knap, dorset, uk – coa
Very rare 8" sonninia adicra fossil ammonite – lower bajocian, jurassic, stoke knap, dorset, uk – coa - Image 2
Very rare 8" sonninia adicra fossil ammonite – lower bajocian, jurassic, stoke knap, dorset, uk – coa - Image 3

Very rare 8″ sonninia adicra fossil ammonite – lower bajocian, jurassic, stoke knap, dorset, uk – coa

Original price was: £360.00.Current price is: £288.00.

This is a very rare and well-preserved 8″ Sonninia adicra fossil ammonite, dating to the Laeviuscula Zone of the Lower Inferior Oolite, Lower Bajocian stage of the Middle Jurassic (~170 million years ago), discovered in Stoke Knap, Dorset, United Kingdom.

Sonninia adicra belongs to the Sonniniidae family, known for its highly compressed shell, fine ribbing, and distinct evolute coiling. As a nektonic (free-swimming) marine predator, it thrived in the warm Jurassic seas, playing a key role in the ancient marine ecosystem.

The Lower Inferior Oolite formations of Stoke Knap, Dorset are well-known for yielding exceptionally preserved ammonite fossils, offering crucial insights into Jurassic paleoenvironments. This rare ammonite specimen is a significant piece for fossil collectors, researchers, and display purposes, representing an important part of Jurassic paleontology.

Geological Information:

  • Formation: Lower Inferior Oolite
  • Zone: Laeviuscula Zone
  • Stage: Lower Bajocian, Middle Jurassic (~170 million years old)
  • Location: Stoke Knap, Dorset, United Kingdom
  • Depositional Environment: Shallow marine carbonate platform

Fossil Characteristics:

  • Large and well-preserved Sonninia adicra ammonite fossil
  • Highly detailed ribbing and elegant evolute shell structure
  • Rare ammonite from the Bajocian stage of the Jurassic
  • Ideal for collectors, researchers, and display

Key Features:

  • Authentic Sonninia adicra ammonite fossil
  • Very rare Lower Bajocian ammonite from Dorset, UK
  • From the Alice Purnell Collection
  • 100% genuine specimen with Certificate of Authenticity

Scale Rule / Cube = 1cm – Please refer to the photos for accurate sizing.

All fossils are securely packaged for worldwide shipping.

(Actual as seen)

Only 1 left in stock

SKU: AF0579 Category:

Description

This is a very rare and well-preserved 8″ Sonninia adicra fossil ammonite, dating to the Laeviuscula Zone of the Lower Inferior Oolite, Lower Bajocian stage of the Middle Jurassic (~170 million years ago), discovered in Stoke Knap, Dorset, United Kingdom.

Sonninia adicra belongs to the Sonniniidae family, known for its highly compressed shell, fine ribbing, and distinct evolute coiling. As a nektonic (free-swimming) marine predator, it thrived in the warm Jurassic seas, playing a key role in the ancient marine ecosystem.

The Lower Inferior Oolite formations of Stoke Knap, Dorset are well-known for yielding exceptionally preserved ammonite fossils, offering crucial insights into Jurassic paleoenvironments. This rare ammonite specimen is a significant piece for fossil collectors, researchers, and display purposes, representing an important part of Jurassic paleontology.

Geological Information:

  • Formation: Lower Inferior Oolite
  • Zone: Laeviuscula Zone
  • Stage: Lower Bajocian, Middle Jurassic (~170 million years old)
  • Location: Stoke Knap, Dorset, United Kingdom
  • Depositional Environment: Shallow marine carbonate platform

Fossil Characteristics:

  • Large and well-preserved Sonninia adicra ammonite fossil
  • Highly detailed ribbing and elegant evolute shell structure
  • Rare ammonite from the Bajocian stage of the Jurassic
  • Ideal for collectors, researchers, and display

Key Features:

  • Authentic Sonninia adicra ammonite fossil
  • Very rare Lower Bajocian ammonite from Dorset, UK
  • From the Alice Purnell Collection
  • 100% genuine specimen with Certificate of Authenticity

Scale Rule / Cube = 1cm – Please refer to the photos for accurate sizing.

All fossils are securely packaged for worldwide shipping.

Additional information

Weight 0.1 g
Dimensions 10 × 10 × 10 cm
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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