Silver dollar - AbsoluteAstronomy.com

Silver dollar may refer to:

A Dollar coin (United States) made of any white metal, especially one made of silver.
A Canadian silver dollar
Canadian silver dollar
The Royal Canadian Mint issued the first silver dollar in 1935 to commemorate the Silver Jubilee of King George V. The coin’s reverse design was sculpted by Emanuel Hahn and portrays a voyageur and an aboriginal paddling a birch-bark canoe. The faint lines in the background represent the Northern...

commemorative coin.
Silver trade dollar
Trade dollar
-United States:The United States trade dollar is a silver dollar coin that was issued by the United States Mint and minted in Philadelphia, Pennsylvania, Carson City, and San Francisco from 1873 to 1885. Trade dollars intended for circulation were last produced in 1878 while proof coin production...

s issued by a number of countries
Three species of Characiformes
Characiformes
The Characiformes are an order of ray-finned fish, comprising the characins and their allies. Grouped in 18 recognized families, there are a few thousand different species, including the well-known piranha and tetras.-Taxonomy:...

, named from their resemblance to the coin:
- Metynnis argenteus
  Metynnis argenteus
  Silver dollar is a common name given to a number of species of fishes, mostly in the genus Metynnis, tropical fish belonging to the Characidae family which are closely related to piranha and pacu...
  
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- Metynnis hypsauchen
  Metynnis hypsauchen
  Metynnis hypsauchen is a species of characin found in Bolivia, Brazil, Guyana and Peru. It is one of the fish knowns as the "silver dollar" in the aquarium trade....
  
  .
- Metynnis maculatus
  Metynnis maculatus
  Metynnis maculatus, the Spotted metynnis, is a species of characin found in Argentina and Brazil and possibly in Bolivia, Paraguay and Peru. It is one of the species of fish known in the aquarium trade as the "silver dollar"....
  
  .
A type of pancake, typically about 7 cm (3 inches) in diameter - these are usually served in groups of five or ten.

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