The Peski Kids Book #4: Near Extinction by R.A. Spratt
The annual geography excursion was supposed to be educational, but with The Peski Kids on board it soon turns into chaos. April tries to smash her way out of a moving bus, Fin gets his head bitten by a dinosaur, Joe finds himself carrying around a beautiful girl with two fake sprained ankles and Loretta gets over enthusiastic with a butane torch. That’s all before the criminals turn up and hijack the school bus.
The Peski Kids are going to be in so much trouble . . . if they make it back to Currawong alive.