Figure 26.0 A painting of early Earth showing volcanic activity and photosynthetic prokaryotes in dense mats

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Figure 26.0 A painting of early Earth showing
volcanic activity and photosynthetic prokaryotes
in dense mats
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Figure 26.3 Early (left) and modern (right)
prokaryotes
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Figure 26.3x2 Filamentous cyanobacteria from the
Bitter Springs Chert
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• Why is fossil record considered incomplete?

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Figure 26.4 Bacterial mats and stromatolites
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Figure 26.4x Stromatolites in Northern Canada
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Relative Dating
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Figure 25.2 Radiometric dating
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Table 25.1 The Geologic Time Scale
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Figure 26.1 Some major episodes in the history
of life
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Figure 25.4 The history of continental drift