When did mammals emerge on Earth (from an evolutionary standpoint)?

  1. andrew savage profile image61
    andrew savageposted 4 years ago

    When did mammals emerge on Earth (from an evolutionary standpoint)?

  2. mhrussel profile image58
    mhrusselposted 4 years ago

    About 220 million years ago, the first mammal species was dated: Adelobasileus cromptoni. A partial skull was found in Texas.

 
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