On the Illinois prairies William C. Darrah, instructor in Biology, discovered "the most perfect plant fossil over found," and in the trackless forests of the Pico del Yaque Mountains in the ...

A survey found that Americans think the coolest work you can do in Illinois is be a fossil expert at the Field Museum.

CHICAGO — The Field Museum unveiled its acquisition Monday of a fossil showing the earliest known bird species — Archaeopteryx. Only a dozen other Archaeopteryx specimens have been found with ...