Dinosaurs defined the Triassic, Jurassic and Cretaceous periods millions of years ago. They saw Pangea break apart, plants push out of the earth and the earliest birds and mammals come to life.
Then, they defined four decades of growing up in Seattle. Generations of kids — most now grown-ups, and some parents themselves — remember gazing upon the ancient wonders at Pacific Science Center.
But the museum confirmed Friday that even these dinosaurs have gone extinct…