[Campbell Biology P.780] Referring to Figure 34.21, what is the approximate time range in mi... | Practice Question

Referring to Figure 34.21, what is the approximate time range in millions of years ago that would include the origin of amphibians?

  • A: 415–400 MYA
  • B: 365–310 MYA
  • C: 295–265 MYA
  • D: 0 MYA (Present Day)

Explanation

Figure 34.21 shows that the branch for 'Amphibians' starts at approximately 365 million years ago, and continues up to the point where Amniotes diverge around 310 million years ago, representing the early diversification of tetrapods that remained tied to water.