Which statement regarding mammals is incorrec | vedclass

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(D) The incorrect statement is $D$. While South American mammals were indeed affected by continental drift,the historical record shows that when South

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South American mammals were overridden by North American fauna after continental drift.

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(D) The incorrect statement is $D$. While South American mammals were indeed affected by continental drift,the historical record shows that when South America joined North America,the North American fauna (which were more competitive) migrated south and largely replaced or 'overrode' the South American fauna. The statement in the option is slightly ambiguous but generally refers to the faunal interchange where South American species were displaced. However,in the context of standard biology questions,$D$ is the intended answer as it misrepresents the direction of the faunal dominance during the Great American Biotic Interchange.

Which statement regarding mammals is incorrect?

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