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509697
Caption: Labyrinthodont (Labyrinthodontia)
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 11.40 MB
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481259
Caption: Evolutionary rates of three proteins: fibrinopeptides (very fast), hemoglobin (intermediate), and cytochrome c (slow).
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 3.19 MB
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481072
Caption: A geologic time scale shows major evolutionary events from 650 million years ago to the present.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 41.21 MB