A lab mix-up accidentally releases a full-sized Triceratops into the town festival in the sixth and final installment of Dustin Hansen's illustrated chapter book series, Microsaurs.

As the first official members of the International Microsaur Protection Agency, Danny and Lin thought that they were prepared for anything. They've flown with Tiny-Dactyls, herded Tiny-Stegos, and wrangled Tiny-saurus Rexes. But when the Professor's newly upgraded Expand-o-matic messes up, they end up facing their biggest problem yet... a full-sized Triceratops let loose in the middle of the town's yearly Tomato Festival!

Will Danny and Lin be able to stop their favorite Tiny-Tricera from terrorizing the town, or will the Microsaurs become front page news and be lost forever?