When the museum's prized prehistoric tumbleweed goes missing, Andy heads back 85 million years in time to try and find more. On his search he helps a mother dinosaur protect her nest and then manages to get covered in dino snot!

Andy travels back in time 3 million years to the Great Rift Valley in Africa to meet one of our very own ancient ancestors, Australopithecus. During his adventure he has a narrow escape from an angry relative of the elephant.

Andy goes on another time-travelling adventure to collect barnacles from a prehistoric ocean for his new museum display. During his journey explores the seabed with his scuba gear and tracks down a giant prehistoric whale.

Andy meets the largest mammal ever to walk the earth when he travels back to Mongolia 30 million years in the distant past. On his travels he has a night-time run-in with some hungry Hyaenodons.

Andy dons his winter coat and heads off on another prehistoric adventure, this time back 30,000 years to the last ice age. On his travels he is stalked by a cave lion, before joining woolly mammoths on their annual migration.

To finish Mrs Pickles' birthday surprise, Andy travels back in time 36 million years to find a tooth belonging to a carnivorous predator, but when his backpack is stolen he enlists the help of a herd of giant Brontothere.

Andy travels back 70 million years to meet the miniature Magyarosaurus, a relative of the giant sauropod dinosaurs. But when he arrives on their island he has to shrink down as well to hide from a giant flying reptile.

Andy breaks a valuable museum artefact and has to travel back in time 30 million years to replace it. Landing in an age when giant mammals roamed the Earth, he gets chased by a swarm of angry prehistoric hornets.

Andy travels 160 million years into the past to hunt for a prehistoric clamshell. Plunging into the waters of an ancient ocean, he meets some giant swimming reptiles and helps them to escape a creature called Predator X.

Andy heads 49 million years back in time to find out the colour of a prehistoric bird's eggs. But when he finally tracks down a nest, a new chick starts to hatch and he must protect it against a colony of prehistoric ants.

Andy jumps into his time-travelling clock and heads back 3 million years, where he runs into some ancient primates and joins their tribe. Along the way, he helps them fend off a prehistoric cat, before having his backpack stolen.

Andy travels back 85 million years to meet a giant feathered dinosaur that is as tall as a house! Along the way, he helps to protect a nest full of prehistoric eggs and gets caught in a super-sized sandstorm.

Andy meets the Ankylosaur, the armoured tank of the dinosaur world, when he travels back in time 70 million years on a mission to replace a broken museum artefact.

Andy heads back in time to search a prehistoric forest for a plantmunching dinosaur, but he runs into a relative of the T-rex instead, before joining a herd of Centrosaurus to escape a flash flood.

Andy leaps into his time-travelling clock to visit the fearsome sabretoothed cat, but when his gizmo malfunctions, he is shrunk down to the size of an insect and must escape from a marauding prehistoric dung beetle!

When an accident at the museum ruins his new prehistoric exhibit, Andy travels 150 million years back in time! He tracks down the peculiar Camptosaurus and plays hide-and-seek with a fierce Allosaurus.

Andy goes in search of a Woolly Rhino, travelling back 50 thousand years to a snowy, prehistoric mountain range. Can he find the rhino's favourite food & get back to his time-travelling clock before it returns to the museum?

Andy searches for the tiny Leptictidium, a furry mammal that used to bounce around the forests of Europe fifty million years ago.

Andy travels back to prehistoric times to meet the Spinosaurus, a massive meat-eating dinosaur that is even bigger than the T-rex! On his adventure, Andy rides a speedy Ouranosaurus and swims in a prehistoric river.

Andy travels through time and lands 30 million years ago in Mongolia, where he meets the Paraceratherium - a giant mammal which is five times the size of a Rhinoceros!

Andy plunges into an underwater prehistoric adventure 150 million years back in time, as he searches for a swimming reptile that's the size of an elephant! But after being chased by a scary shark he finds himself lost at sea.

Andy travels 15 thousand years into the past to meet a giant prehistoric sloth. On the way, he is stalked by a Sabre-toothed cat and rides a colossal Columbian mammoth.

Andy and his time travelling clock head 160 million years into the past in search of a feather belonging to a tiny prehistoric dinosaur called the Epidexipteryx.

When disaster strikes at the museum, Andy sets off on a prehistoric adventure using his time-travelling clock. Andy joins a herd of woolly mammoths 30,000 years in the past and bumps into one of his own ancient ancestors.

Andy travels back 95 million years in search of an eggshell belonging to one of the biggest animals to ever walk the earth.