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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Cretaceous ammonite fossil pair – polished halves from madagascar – genuine marine cephalopod with certificate

Cretaceous ammonite fossil pair – polished halves from madagascar – genuine marine cephalopod with certificate

Original price was: £18.00.Current price is: £16.20.

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

 

Specimen: Ammonite Pair

Age: Cretaceous

Location@Madagascar

Size (picture scale cube=1cm): 38 x 20 x 33mm (1.5 x 0.79 x 1.3 inches)

 

Ammonites are one of the most recognisable fossils around, this is due to their familiar spiral shape shell reminiscent of what we know as a snail shell, though these creatures are not related to snails at all. They were marine animals, present between 240 – 65 million years ago, that had a coiled external shell similar to that of the modern-day nautilus, and although they resembled a nautilus, these molluscs are more closely related to living Coleoids, i.e. octopus, squid, and cuttlefish.

 

These stunningly beautiful Ammonites have been sliced in half and polished to expose the amazingly colourful inner chambers of the fossil.

 

ACTUAL AS SEEN: The image shows the EXACT specimen you will receive. The specimen has been carefully hand selected and photographed. Measurements are as accurate as possible, though be aware measuring precise dimensions can be difficult from irregular shaped items. Whilst we portray colours as close to life-like as we can, colours will vary if taken in sunlight, indoors, from monitor to monitor and device to device. Once this specimen is sold, we will update this listing with new similar selected item, with a new photo and dimensions.

(Actual as seen)

Only 1 left in stock

SKU: FP9879 Category:

Description

This listing showcases a beautiful pair of genuine Cretaceous Ammonite fossils, discovered in the fossil-rich deposits of Madagascar and carefully sliced and polished to reveal the breathtaking internal chamber structure of these ancient marine creatures.

Ammonites are among the most iconic and easily recognised fossils, known for their tightly coiled spiral shells that resemble the shape of a modern snail—but these fascinating creatures are in fact more closely related to modern squid, octopuses, and cuttlefish (coleoids). They thrived in the world’s oceans from about 240 to 65 million years ago, with the Cretaceous Period marking their final flourishing before their extinction alongside the dinosaurs.

The internal chambers seen in these sliced ammonite halves once served as buoyancy aids, allowing the animal to regulate its position in the water column. The polished interior often reveals a kaleidoscope of natural mineralisation, with calcite, aragonite, and other minerals having slowly replaced the original organic materials over millions of years.

These paired specimens are ideal for display, educational use, or as a captivating collector’s item. Their natural symmetry and intricate inner details make them perfect gifts for fossil lovers, educators, or anyone interested in the natural history of life on Earth.

Item Details:

  • Name: Ammonite (unspecified genus)
  • Specimen: Sliced and Polished Ammonite Pair
  • Age: Cretaceous Period
  • Location: Madagascar
  • Scale Reference: Scale cube = 1cm. Please refer to the photo for full sizing.
  • Certificate of Authenticity: Included

ACTUAL AS SEEN: You will receive the exact ammonite pair shown in the photo. Each fossil is hand-selected and professionally photographed.

Please Note:

  • Some fossils may be gently propped for photography.
  • Colours may vary depending on lighting and device screens.
  • Measurements are accurate to the best extent possible but minor variation may occur due to natural irregularities.
  • Once sold, this listing will be updated with a new item and fresh photos.

100% Genuine Fossils – Professionally Selected – Certificate of Authenticity Included

Additional information

Era

Cretaceous
Origin

Madagascar

Cretaceous Information

The Cretaceous Period (145–66 million years ago) was the final era of the Mesozoic, marked by the dominance of dinosaurs and the rise of flowering plants. It had a warm, greenhouse climate, with high sea levels that created vast shallow inland seas. Marine life flourished, including mosasaurs, ammonites, and rudist reefs, while the land was ruled by iconic dinosaurs like Tyrannosaurus rex, Triceratops, and Spinosaurus. Mammals and birds diversified, and insects thrived. The period ended with the mass extinction event, likely caused by an asteroid impact, wiping out the dinosaurs and paving the way for the rise of mammals in the Cenozoic.

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