Paul D Stewart / Photographic reconstruction of Archaeopteryx by Paul D. Stewart. The fossils of this species was from 150 million years ago, and is thought of as a stage between feathered dinosaurs and modern birds.

Paul D Stewart / Lithograph with contemporary colouring, continental version of the wallchart produced by Benjamin Waterhouse Hawkins for the Department of Science and Art 1862. It is entitled 'Enaliosauria, or marine...

Paul D Stewart / Illustration of vivid colour lithograph for 'Dr. Schubert's Naturgeschichte - Geologie, Mineralreich, Palaontologie'. Published 1888 in Stuttgart by J.F. Shreiber, the palaeontology section by Dr. Fri...

Paul D Stewart / Landscape of the Triassic coastal environment with reconstructions of dinosaurs and marine reptiles, 'Dr. Schubert's Naturgeschichte - Geologie, Mineralreich, Palaontologie'. Published in Stuttgart 18...

Paul D Stewart / Restoration of the Iguanodon by Alice B. Woodward from Lydekker's The Royal Natural History' Frederick Warne and co, 1896. This is one of the first reconstructions to correctly show the Iguanodon's th...

Andrew Parkinson / 2020VISION / An adult Coot (Fulica atra) running across the surface of a lake, Derbyshire, England, UK, March 2010. Did you know? It is a current theory that dinosaurs such as Archaeopteryx developed wings to help...

Daniel Heuclin / Theropod dinosaur tracks preserved in Lower Jurassic (200 million years old) rock. Near Tuba City, Arizona, USA

Juergen Freund / Casts of 130 million year old dinosaur footprints (the original footprints are only exposed at low tide) at Gantheaume Point, with its distinctive red soils. Broome, Western Australia.

Willem Kolvoort / Limestone plateau with about 2500 footprints of dinosaurs from about 150 million years ago. The footprints in this picture might be of the Iguanodon, Megalosaurus or Thyrannosaurus. Kugitang Tau Range...

Willem Kolvoort / Limestone plateau with about 2500 footprints of dinosaurs from about 150 million years ago. The footprints in this picture might be of the Iguanodon, Megalosaurus or Thyrannosaurus. Kugitang Tau Range...

Willem Kolvoort / Limestone plateau with about 2500 footprints of dinosaurs from about 150 million years ago. The footprints in this picture might be of the Iguanodon, Megalosaurus or Thyrannosaurus. Kugitang Tau Range...

Willem Kolvoort / Dinosaur footprint, possibly Iguanodon, megalosaurus or Tyrannosaurus. From limestone plateau with about 2500 footprints of dinosaurs from about 150 million ago. Kugitang Tau Range, Turkmenistan 1990...