Arctida can also be used. Name of a continent that formed on Earth about 2 years ago. 500 or 2 . 600 million years in the Neoarchic Era. Name of a genus of saltwater clams, belonging to the family Veneridae. Name of an asteroid ( 1031 ) . It has also been dubbed 1924 RR, A910 VB or A913 JA, by astronomers.
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