DINOSAURS ARE marching - in place - as a baker's dozen of animatronic giants gather at the Academy of Natural Sciences of Drexel University for "Dinosaurs Unearthed," running Oct. 12 through March 30.

Full-size Jurassic Period skeletons, real fossils and casts will be on display, and plenty of all-ages activities are planned.

While you're at the academy, be sure to visit Dinosaur Hall, where local artist Bob Walters did most of the images on display signs. "If you're in there, you're in part of my portfolio," Walters said.

Academy of Natural Sciences, 1900 Benjamin Franklin Parkway, Oct. 12-March 30. Open 10 a.m.-4 p.m. weekdays, till 5 p.m. weekends. Ages 13 and up, $15; ages 3-12, seniors, students and military, $13; younger than 3, free. 215-299-1000, ansp.org.