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Mesozoic Era
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geologic time Pangea: Early Triassic Period Pangea: Late Jurassic Period Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins during Late Cretaceous time. Included in the paleogeographic reconstruction are cold and warm ocean currents. The present-day coastlines and tectonic boundaries of the configured continents are shown in the inset at the lower right. dinosaurs to scale Chicxulub crater computer-generated image of the Chicxulub crater plant evolution Cretaceous Period in geologic time Jurassic Period in geologic time
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Mesozoic Era summary
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Photos

geologic time
Pangea: Early Triassic Period
Pangea: Late Jurassic Period
Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins during Late Cretaceous time. Included in the paleogeographic reconstruction are cold and warm ocean currents. The present-day coastlines and tectonic boundaries of the configured continents are shown in the inset at the lower right.
dinosaurs to scale
Chicxulub crater
computer-generated image of the Chicxulub crater
plant evolution
Cretaceous Period in geologic time
Jurassic Period in geologic time
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Related Topics and References

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Key People

George Gaylord Simpson
American paleontologist
Mantell, detail of an engraving
Gideon Algernon Mantell
British paleontologist

Related Quizzes and Features

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