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Contact: Christian Basi
University of Missouri-Columbia


Caption: In the study, MacLeod examined fossils of organisms that lived 90 million years ago. This photo is an image from a Scanning electron microscope of a planktic (left) and benthic (right) foraminifera from Tanzania. Both shells are less than 0.5 millimeters across.

Credit: University of Missouri

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Related news release: Late Cretaceous Period was likely ice-free

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