Samuel McMahan cushions the harness around the model Tyrannosaurus rex before it is hoisted in the air to attach the legs to the base Thursday in preparation for the Jurassic Quest show at the Show Me Center. Jurassic Quest features over 50 life-size dinosaurs, some of which are animatronic. The show runs from 3 to 8 p.m. today, 9 a.m. to 8 p.m. Saturday and 9 a.m. to 7 p.m. Sunday.