A collection of strange animals whose fossils have been discovered.
More than 99 percent of all species that have lived on Earth are now extinct. Sometimes extinctions actually accelerate the evolution of life on Earth. As some forms of life weaken and die off, they create opportunity for other species to grow and flourish. Take a look at these creatures and imagine what life would be like if they had survived!
Shown is the 11-foot-long armor-plated shark-eating Dunkleosteus. Link
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