Megasaurus mash-up 2

Other Title: Megasaurus mash-up two
Four-vol. ed
New Zealand author; New Zealand illustrator
On back cover: 4 books in one
Contents: Spino-rottysaurus -- Dako-snappysaurus -- Scuto-stickysaurus -- Salto-scaredypus
Summary: Follow the adventures of Arg, the evolved Neanderthal boy, and his friend Skeet, the talking T-rex, as they try to save the dinosaurs from peril ... and themselves from ending up as stew