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 giant 8" perisphinctes fossil ammonite – callovian, jurassic – tulear, madagascar – authentic specimen with certificate
Rare giant 8" perisphinctes fossil ammonite – callovian, jurassic – tulear, madagascar – authentic specimen with certificate - Image 2
Rare giant 8" perisphinctes fossil ammonite – callovian, jurassic – tulear, madagascar – authentic specimen with certificate - Image 3

Rare giant 8″ perisphinctes fossil ammonite – callovian, jurassic – tulear, madagascar – authentic specimen with certificate

£540.00

Specimen: Giant Perisphinctes Fossil Ammonite

Fossil Type: Ammonite – Extinct Marine Cephalopod

Age: Middle Jurassic – Callovian Stage (~166 – 163 million years ago)

Geological Formation: Tulear Region, Madagascar

Size: Giant – 8 inches

Scale Cube = 1cm – Please refer to photo for accurate sizing

Includes Certificate of Authenticity

This RARE 8″ Perisphinctes fossil ammonite is an extraordinary specimen from the Middle Jurassic Callovian deposits of Tulear, Madagascar, a globally renowned site for premium-quality ammonite fossils. Its size, preservation, and ribbed spiral morphology make it a stand-out piece for any fossil enthusiast or natural history collector.

Perisphinctes is a genus of extinct ammonite mollusks that flourished in the Jurassic seas around 166 to 163 million years ago. These cephalopods were free-swimming marine predators, with a shell structure that evolved for buoyancy and streamlined motion through the water. Their symmetrical ribbing and tight coiling make them especially attractive for both display and academic study.

What sets this particular specimen apart is its exceptional size and detail preservation. At 8 inches, it sits among the larger representatives of the genus—specimens of this calibre are significantly less common, making it an ideal centrepiece in any fossil display.

Fossils from the Tulear region are highly sought after for their superb quality and distinct coloration, a result of the mineral-rich Jurassic seabeds. This ammonite has been carefully cleaned and prepped, revealing the intricate suture lines and growth ribs typical of Perisphinctes ammonites.

ACTUAL AS SEEN:

The specimen shown in the photo is the exact fossil you will receive. This is not a stock image. The piece has been professionally hand-selected and documented for authenticity and accuracy. Please refer to the scale cube (1cm) for sizing. Colours may vary slightly depending on lighting and monitor settings.

Why This Fossil?

  • Genuine Middle Jurassic Perisphinctes ammonite
  • Rare size at 8 inches
  • Excellent preservation and visual detail
  • From a world-famous fossil region: Tulear, Madagascar
  • Comes with a Certificate of Authenticity
  • Ideal for collectors, educators, and natural history displays

Note: Once this specimen is sold, the listing will be updated with a new fossil of similar type but different shape/size. We recommend taking a screenshot for your records once purchased.

(Actual as seen)

Includes a fully hand-signed Premium Certificate of Authenticity.

Out of stock

SKU: UF3186 Category:

Description

Specimen: Giant Perisphinctes Fossil Ammonite

Fossil Type: Ammonite – Extinct Marine Cephalopod

Age: Middle Jurassic – Callovian Stage (~166 – 163 million years ago)

Geological Formation: Tulear Region, Madagascar

Size: Giant – 8 inches

Scale Cube = 1cm – Please refer to photo for accurate sizing

Includes Certificate of Authenticity

This RARE 8″ Perisphinctes fossil ammonite is an extraordinary specimen from the Middle Jurassic Callovian deposits of Tulear, Madagascar, a globally renowned site for premium-quality ammonite fossils. Its size, preservation, and ribbed spiral morphology make it a stand-out piece for any fossil enthusiast or natural history collector.

Perisphinctes is a genus of extinct ammonite mollusks that flourished in the Jurassic seas around 166 to 163 million years ago. These cephalopods were free-swimming marine predators, with a shell structure that evolved for buoyancy and streamlined motion through the water. Their symmetrical ribbing and tight coiling make them especially attractive for both display and academic study.

What sets this particular specimen apart is its exceptional size and detail preservation. At 8 inches, it sits among the larger representatives of the genus—specimens of this calibre are significantly less common, making it an ideal centrepiece in any fossil display.

Fossils from the Tulear region are highly sought after for their superb quality and distinct coloration, a result of the mineral-rich Jurassic seabeds. This ammonite has been carefully cleaned and prepped, revealing the intricate suture lines and growth ribs typical of Perisphinctes ammonites.

ACTUAL AS SEEN:

The specimen shown in the photo is the exact fossil you will receive. This is not a stock image. The piece has been professionally hand-selected and documented for authenticity and accuracy. Please refer to the scale cube (1cm) for sizing. Colours may vary slightly depending on lighting and monitor settings.

Why This Fossil?

  • Genuine Middle Jurassic Perisphinctes ammonite
  • Rare size at 8 inches
  • Excellent preservation and visual detail
  • From a world-famous fossil region: Tulear, Madagascar
  • Comes with a Certificate of Authenticity
  • Ideal for collectors, educators, and natural history displays

Note: Once this specimen is sold, the listing will be updated with a new fossil of similar type but different shape/size. We recommend taking a screenshot for your records once purchased.

Additional information

Era

Jurassic
Origin

Madagascar

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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