Philadelphia Daily News Jonathan Takiff column: Jonathan Takiff /.(Column)

Byline: Jonathan Takiff

Aug. 15--THE GIZMO: Building the perfect (prehistoric) beast.

ANCIENT HISTORY: Sixty-five million years after their demise, the fierce tyrannosaurus rex, long-necked brachiosaurus and bony-plated stegosaurus are walking on God's good concrete again.

And no, we're not talking about the scale models and computer-generated creations in films like "Jurassic Park," but life-size creatures looming upward of 50 feet tall and 75 feet long in the new arena extravaganza "Walking with Dinosaurs -- The Live Experience," at the Wachovia Spectrum tomorrow through Sunday.

Amazingly animated, these beasts sway, snarl and sweat, forage for food, guard their young and fend off enemies.

BRINGING 'EM ALL BACK HOME: The

dinos' comeback is largely due to the success of the BBC TV production "Walking With Dinosaurs," which attracted 700 million viewers worldwide, and to a visionary events promoter, Australian Bruce MacTaggart, who was knocked out by the series' "brilliant blend of special effects, escapism, excitement and information."

He got the …