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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Rastellum oyster bivalve ("Fossil Alien")

Rastellum oyster bivalve (“Fossil Alien”)

Original price was: £12.00.Current price is: £10.80.

(Regular, will differ to photo)

Only 14 left in stock

SKU: FS2221 Category:

Description

SIZE (Picture scale cube=1cm): 60-80mm (Range)

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

Type: Rastellum oyster bivalve (fossil Alien)
Age: Cretaceous
Location: Marovoay, Mahajanga district, Madagascar

More commonly known as ‘Fossil Alien’s these amazing bivalves are actually oyster shells.  Bivalves are bilaterally symmetrical molluscs having two calcareous, asymmetrical shells (valves) – they include the clams, oysters, and scallops. In most bivalves, the two shells are mirror images of each other (the major exception is the oysters). They occur in marine, estuarine, and freshwater environments.

Natural

WILL DIFFER TO PHOTO: The image shows an example of the single specimen you will receive. This will be picked from our stock box graded and with a size approximately within the size range indicated. It will not be the same specimen shown in the photo, the colours, shape, size and style may vary as with any natural item. To guarantee the specimen you receive will be representative by that in photo, we would always recommend the Actual as seen version of this item.

Additional information

Origin

Madagascar
Era

Cretaceous

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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