In 2013-2015 the Royal Canadian Mint issued a series called "Canadian Dinosaurs".
This is the fourth and last coin in the series featuring portraits of prehistoric animals discovered in Canada.
It is a 2015 $20 CAD weighting 31.39g with 99.99% silver purity and Proof finish.
Its mintage was 8,500 units and the issue price was $89.95 CAD.
Albertosaurus sarcophagus resided in what is now western Canada during the Late Cretaceous, between 72 and 68 million years ago. Resembling a slender, long-limbed Tyrannosaurus rex (a closely related species that emerged several million years later), Albertosaurus sarcophagus bore a large head, sharp teeth, long tail, and tiny two-toed forelimbs.
The reverse features an interpretation of how Albertosaurus sarcophagus may have looked. In this depiction, Albertosaurus sarcophagus is portrayed with filamentous feathers or proto-feathers running along the back of the animal and lining the back of each forelimb. The rest of its scaly body surface is densely pebbled—an element skillfully portrayed in exceptional detail by Royal Canadian Mint engravers. The scientific accuracy of this depiction has been verified by palaeontologists at the Royal Tyrrell Museum of Palaeontology.
The obverse of the coin features the well known effigy of Her Majesty Queen Elizabeth II by Susanna Blunt.
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