Rastellum oyster bivalve (“Fossil Alien”)

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SIZE: 40-60mm (Range)

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SKU: FS9100 Category:


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

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.


SIMILAR TO SEENThe image shows an example of the single specimen you will receive. This will be picked from our stock box graded and with a size within the minimum and maximum size range indicated. It will not be the exact specimen 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.

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1 review for Rastellum oyster bivalve (“Fossil Alien”)

  1. paszkamobile123 (verified owner)

    Good price

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