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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SALE 20%

Polished Ammonite Fossil Pair – Genuine Cretaceous Ammonites from Madagascar – Cut & Polished Spiral Shells with Certificate of Authenticity

Original price was: £30.00.Current price is: £24.00.

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): 72 x 22 x 57mm (2.83 x 0.87 x 2.24 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, who had a coiled external shell similar to that of the modern nautilus, and although they resembled a modern day nautilus, these molluscs are more closely related to living coleoids (i.e. octopuses, squid, and cuttlefish!)
These stunningly beautiful ammonites have been sliced in half and polished to expose the amazing colourful chambers inside 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: FP9794 Category:

Description

Now available is a beautifully preserved pair of genuine Cretaceous ammonite fossils, discovered in the fossil-rich regions of Madagascar, and dated to approximately 100 million years ago. These extinct marine creatures once roamed the warm, shallow seas of the Cretaceous period, and their iconic spiral shells have been perfectly fossilised through natural mineralisation over millions of years.

This ammonite pair has been sliced and polished to reveal the intricate inner chambers of the fossil, offering a spectacular look into the natural geometry and beauty of ancient marine life. These pieces make an excellent addition to any fossil collection, or a unique gift for fossil enthusiasts, educators, or lovers of natural history.

Fossil & Geological Information:

  • Specimen: Ammonite Fossil Pair (cut and polished)
  • Age: Cretaceous Period (~100 million years ago)
  • Location: Madagascar
  • Phylum: Mollusca
  • Class: Cephalopoda
  • Subclass: Ammonoidea
  • Scale Cube = 1cm – See image for accurate sizing
  • Authenticity: 100% Genuine – Certificate of Authenticity included

About Ammonites:

Ammonites are one of the most well-known fossil groups, named after the Egyptian god Ammon, whose ram-like horns their spiral shells resemble. Despite their snail-like appearance, ammonites were actually marine cephalopods and are more closely related to modern-day squids, octopuses, and cuttlefish than snails.

They lived in oceans all around the world from the Devonian to the end of the Cretaceous Period, when they went extinct during the same mass extinction event that wiped out the dinosaurs. Their coiled, chambered shells helped them control buoyancy, allowing them to move easily through prehistoric seas.

Why This Fossil Pair Is Special:

  • Professionally cut and polished to reveal colourful internal chambering
  • Dated to the Cretaceous Period, ~100 million years old
  • Fossil collected from Madagascar, a premier locality for ammonite preservation
  • Stunning internal detail, showcasing natural crystal and mineral patterns
  • Makes a great gift, educational tool, or decorative piece
  • Perfect for collectors of fossils, natural history, and prehistoric life

Key Features:

  • Authentic Cretaceous ammonite fossil pair
  • From Madagascar – a global hotspot for fossil ammonites
  • Polished halves showing detailed inner chamber structures
  • Includes a Certificate of Authenticity
  • Exact specimen shown – hand-selected and professionally photographed
  • Scale cube = 1cm for accurate size reference
  • Colours may vary slightly due to lighting or display settings
  • Fossils may be gently propped for photo clarity
  • Once sold, the listing will be updated with new similar items and images

ACTUAL AS SEEN: You will receive the exact ammonite pair pictured in this listing. Each fossil is individually hand-picked and photographed to ensure you get what you see. Please note that while we aim for precise measurements, the irregular shape of fossils may result in minor variances. Colours may also appear slightly different depending on lighting and monitor/device settings.

Bring a genuine piece of Earth’s ancient ocean life into your home with this authentic ammonite fossil pair—an elegant and timeless relic from the Cretaceous seas, perfect for collectors, educators, or as a one-of-a-kind natural gift.

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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