Illustration showing the Earth's geological timescale. Starting from the bottom (oldest), time units marked include eons (hadean, archean and proteroz
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Illustration showing the Earth's geological timescale. Starting from the bottom (oldest), time units marked include eons (hadean, archean and proteroz
Illustration showing the Earth's geological timescale. Starting from the bottom (oldest), time units marked include eons (hadean, archean and proteroz Illustration showing the Earth's geological timescale. Starting from the bottom (oldest), time units marked include eons (hadean, archean and proterozoic), periods (Devonian to Cretaceous) and epochs (paleocene to miocene). Unmarked uppermost layers include the pliocene, pleistocene and holocene. It has been proposed that a new epoch, called the anthropocene, should be included to represent the impact of humans on the planet. The markers on the left facing side of the timeline represent: climatic events (triangle), magnetic events (cross), biological events (circle) and isotopic events (square). Question marks are unknown events
This image could have imperfections.
Media ID 38911742
© SCIENCE PHOTO LIBRARY, Science Photo Library
Calendar Column Cretaceous Earth Epoch Geological Geology Hadean Jurassic No One Paleontology Prehistory Series Text Time Timeline Triassic White Background
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