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Welcome to The Lost Plains! A wild west frontier where dinosaurs never went extinct.It's time for the families of Trihorn to participate in the annual iguanadon drive to Scaly Point. Josh Sanders and his friends Abi and Sam are thrilled to join the drive...until an avalanche comes down and cuts them off from the group!To top it off, Josh's arch-nemesis, Amos, has been trapped with them. With no other choice, the group will have to band together to make it back to Scaly Point-and escape a blood-thirsty T-Rex!This wildly entertaining new chapter book series for ages 7 and up features exciting illustrations and real dino facts! A great way to get kids reading. Also in the Dino Riders series: How to Tame a Triceratops How to Rope a Giganotosaurus