20017 - $20 +- 1 oz. Pure Silver Coin - Ancient Canada: Ogygopsis

In a time that predates the dinosaurs, roughly 500 million years ago, marine invertebrates were the most abundant life forms on Earth. Early arthropods known as trilobites thrived in the ancient seas that covered our planet during the Cambrian Period. Today, their remains are the object of study and fascination—particularly those of the Mount Stephen Trilobite Beds, in British Columbia's Yoho National Park, where "stone bugs" such as Ogygopsis provide a glimpse of life in Ancient Canada

Specifications
No. 154260
Mintage 5,500
Composition 99.99% pure silver
Finish antique
Weight (g) 31.39
Diameter (mm) approx. 38
Edgeplain
Certi ficate serialized
Face value20 dollars
Artist Image based on fossil specimen TMP 1995.110.1 curated at the Royal Tyrell Museum (reverse), Susanna Blunt (obverse)