Refer to the Figure, Which Shows an Imaginary Name Scheme

question 23

Multiple Choice

Refer to the figure, which shows an imaginary name scheme for an undisturbed site with distinct fossil assemblages in the top five layers of strata. Your research team is excited to find (through comparison with other sites around the globe) that these assemblages correspond to some of the known historical periods on Earth.Specifically, the "Leverett" assemblage contains only microscopic life forms, while the "Hadley" stratum contains diverse marine invertebrate animals but no evidence of terrestrial life.Based on this information, which eon in Earth's history contains the "Hadley" stratum?

• A) Phanerozoic
• B) Hadean
• C) Archaean
• D) Proterozoic
• E) Precambrian

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