Kenton, who lives in Allegan but attends Alamo Elementary School near Kalamazoo, said his fifth-grade teacher, John Chapman, had nearly made the same mistake about the Precambrian in a classroom earth-science lesson before catching himself. Kevin Stufflebeam, father of Kenton, took his son to the museum's information desk to report Kenton's concern on a comment form. Last week, the boy received a letter from the museum acknowledging that his observation was "spot on."
"The Precambrian is a dimensionless unit of time, which embraces all the time between the origin of Earth and the beginning of the Cambrian Period of geologic time," the letter says. The solution to the problem would not involve advanced science but rather simply painting over the word "era," the note says.
While no previous visitors to the museum had brought up the error, it has long bothered the paleobiology department's staff, who noticed it even before the Tower of Time was erected 27 years ago, said Lorraine Ramsdell, educational technician for the museum.