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Questions and Answers
When did the first mammals appear?
When did the first mammals appear?
- Devonian period (~360 mya)
- Cretaceous period (~65 mya)
- Triassic period (~220 mya) (correct)
- Jurassic period (~150 mya)
Which group of mammals were almost certainly the first to appear?
Which group of mammals were almost certainly the first to appear?
- Placentals
- Monotremes (correct)
- Marsupials
- Rodents
What does the cladistic diagram in Figure 10.10 show?
What does the cladistic diagram in Figure 10.10 show?
- The different biogeographic regions for mammals
- The global distribution of modern mammals
- The geological time scale of mammalian evolution
- The relationships between mammalian clades and their ancestors (correct)
At what age does the vertical wavy line on the timescale in Figure 10.10 indicate?
At what age does the vertical wavy line on the timescale in Figure 10.10 indicate?
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What does the timetree of mammalian evolution in Figure 10.10 illustrate?
What does the timetree of mammalian evolution in Figure 10.10 illustrate?
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