owenr4758
owenr4758
13.06.2020 • 
Biology

Study the image about geologic time. A geochronological scale measured in Millions of Years Ago or M Y A. Cenozoic era: Paleogene period, 66 to 23 M Y A, diatrima, many types of mammals, smilodon. Neogene period, 23 to 2.6 M Y A, smilodon, mammoth. Quaternary period, 2.6 to today, human, mammoth.

During which period did humans first appear on Earth?

Quaternary
Neogene
Paleogene
Cenozoic

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