Timeline of Ordovician research

This timeline of Ordovician research is a chronological listing of events in the history of geology and paleontology focused on the study of earth during the span of time lasting from 485.4–443.4 million years ago and the legacies of this period in the rock and fossil records.
18th century.
1780s.
1789
20th century.
1970s.
1978
21st century.
2010s.
2015