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octopuses
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1800 - 1931
1932 - 1959
1960 - 1963
1964 - 1992
1993 - 2000
English (2012)
octopi
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1800 - 1881
1882 - 1958
1959 - 1967
1968 - 1990
1991 - 2000
English (2012)