vicariance

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noun vi·car·i·ance \vī-ˈker-ē-ən(t)s, və-\

Definition of vicariance

  1. :  fragmentation of the environment (as by splitting of a tectonic plate) in contrast to dispersal as a factor in promoting biological evolution by division of large populations into isolated subpopulations —called also vicariance biogeography

1957

First Known Use of vicariance

1957

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a brief usually trivial fact

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