I want to know the answer to the following question:
What kind of impression has been uncovered by a University?
All the background I'm provided with is that "In 2008, researchers at Tufts University uncovered what they believe is the world's oldest known full-body impression of a primitive flying insect, a 300 million-year-old specimen from the Carboniferous period.". Is that enough to answer the question?
Answer: yes