Surviving and finding a safe place to lay her eggs is difficult for Hypsilophodon with dinosaurs like Tyrannosaurus Rex around. When she falls into a mysterious pool and finds herself on a modern farm there are still problems.

Finally she finds a safe place to hatch her babies, but how can she keep thirteen baby dinosaurs safe and secret? When the farmer catches one - Hector - and plans to take him to the vet, it's up to Hypsilophodon and her fiesty daughter, Henrietta, to get him back. After a daring rescue, Hypsilophodon takes all her youngsters back through the mysterious pool to her own world.

A perfect read-aloud book for children age 7+ Julia Donaldson is one of today's most loved children's book authors. Julia Donaldson has a fast-growing reputation as a children's writer.

She won the Smarties Prize and the Blue Peter Award for The Gruffalo, illustrated by Axel Scheffler. Since then, Julie and Axel have collaborated on a number of highly successful and award-winning picture books, including The Gruffalo's Child and Room on the Broom. Julia lives in Glasgow.