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The definition of macroevolution is a large-scale change in the evolution of a species. An example of macroevolution is when feathers appeared on some dinosaurs evolving into birds. large-scale and long-range evolution involving the appearance of new genera, families, etc. of organisms.
The terms macroevolution and microevolution were first coined in 1927 by the Russian entomologist Iuri'i Filipchenko (or Philipchenko, depending on the transliteration), in his German-language work VariabilitÃ¤t und Variation, which was an early attempt to reconcile Mendelian genetics and evolution.