Steve Parker is an author, editor and consultant specializing in information books on the natural world, biology, technology and general sciences. He holds a First Class Honours BSc in Zoology and is a Scientific Fellow of the Zoological Society of London. He has worked on the staff at London's Natural History Museum, and in-house at various publishers including Haymarket and Dorling Kindersley.

John Sibbick studied graphic design and illustration, then worked in London studios before becoming a freelance specialist artist with a particular expertise in dinosaur a keen observation of form and function. His work has appeared in several National Geographic magazine articles, books for National Geographic’s young readers, The Illustrated Encyclopedia of Dinosaurs, television programs such as the BBC series Lost Worlds, Vanished Lives, with Sir David Attenborough, and museums all over the world