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PhD alum Brandon Hedrick helps uncover the mystery of how fossils came to rest in National Geographic article

Brandon Hedrick offers two alternate possibilities on how a 120-million-year-old fossil from northeastern China appears to be a nest of babies accompanied by an older companion.

Department of Earth and Environmental Science / University of Pennsylvania, 251 Hayden Hall, 240 South 33rd Street, Philadelphia, PA 19104-6316