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- Dictionarymeg·a·fau·na/ˈmeɡəˌfônə/
noun
- 1. the large mammals of a particular region, habitat, or geological period.
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noun
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In zoology, megafauna (from Greek μέγας megas "large" and Neo-Latin fauna "animal life") are large animals. The precise definition of the term varies widely, though a common threshold is approximately 45 kilograms (99 lb), with other thresholds as low as 10 kilograms (22 lb) or as high as 1,000 kilograms (2,200 lb). Wikipedia