Planktons (IMAGE)

Penn State

Planktons

Caption

This compilation of scanning electron microscope images of organisms includes, at left, Paleocene nannofossils from 60-55 million years ago. These fossils are all post Cretacious Paleogene boundary. At right are several living nannoplankton species. Most of the objects in this compilation are also about 8 microns.

Credit

Timothy Bralower; Penn State

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