• 1,850: The number of different kinds of dinosaurs scientists estimate once lived.

• 14.8: Average new dinosaurs found in the fossil record each year.

• 527: Number of different kinds of dinosaurs found in the fossil record, so far.

• 100: Years it will take archeologists to find all “unknown” dinosaurs.

Source: Swarthmore College news release: “Most Dinosaurs Have Yet to be Discovered, Says Swarthmore College Statistician.” (www.swarthmore.edu/x6212.xml)