By Noble, Martin
By Chancellor, Deborah
By Morris, Neal
By Natural History Museum
By Catherine Chambers
By Sharon Katz Cooper
By Miles Kelly Publishing Ltd, Camilla de la Bedoyere
By dorling-kindersley
By Morris, Neil
By Archie Blackwell
By Pellant, Chris, WATCH
By Abby Colich
By Symes, R. F.
By Harman, Alice
By Dorling Kindersley, Helen Whittaker
By Hynes, Margaret
By Melissa Stewart, Julius Csotonyi, Steve Brusatte
By Anita Ganeri, Mike Phillips
By Kirsty Holmes
By Barbara Taylor
By Dr. Thomas R. Holtz, Jnr., Luis V. Rey
By Anna Claybourne, Collins Big Cat
By Damian Harvey, Matt Ward
By Sian Smith
By Dougal Dixon
By Ian Mercer, G. Cressey (Researcher in Mineral Sciences, The Natural History Museum, London)
By National Geographic Kids
By Andrew Ross