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The Field Museum has recently acquired four meteorites that fell to the bottom of the ocean and became fossilized 500 million years ago. They are so rare the objects are known as the “Mona Lisa of meteorites.” Patti Vasquez talked to Philipp Heck, associate curator for meteorites at the museum about the addition:
Sue, the most complete Tyrannosaurus Rex ever found, on display at the Field Museum. (Field Museum photo)