Scientists from the Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences (CAS), and Mary Schweitzer, of North Carolina State University in the United States, have discovered evidence of fossilized cell nuclei and chromosomes within preserved cartilage of baby duck-billed dinosaurs, dating back 75 million years.
Scientists discovered dinosaur fossils found in northwest Montana. After the analysis, scientists found that the dinosaur belongs to the genus Hypacrosaurus, and comes from a nesting ground in Late Cretaceous sediments.

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