Historic illustrations of dinosaurs are reflections of the science of their times. This makes them less accurate, but engaging in the manner of careful line-drawings capturing a worldview from a time gone past. This is the Iguanodon as seen by scientists throughout time.

Iguanodon was first identified in 1825 by Gideon Mantell, which means that we've witnessed the illustrations of Iguanodon change as our scientific understanding progresses. Iguanodon even show up in current popular culture, starring in Disney's first all-cgi movie. They were large, bulky herbivores vaguely related to the duck-billed dinosaurs like George, but with large thumb spikes and and extra-long fifth finger.

The Country of the Iguanodon drawn by John Martin in Wonders of Geology by Dr. Gideon Mantell in 1838. Notice the tiny pterodactyl in the foreground, and the dino-on-dino-on-dino violence.

The Iguanodon bulks up substantially in this illustration drawn by Samuel Griswold Goodrich in Illustrated Natural History of the Animal Kingdom in 1859.

Yet more Iguanodon-on-Megalosaure violence in L'Iguanodon et le Mégalosaure drawn by Riou in La Terre avant le déluge by Louis Figuier in 1874.

The Iguanodon drawn by Joseph Smit in Extinct Monsters in 1892 appears to enjoy munching on palm trees in Papua New Guinea.

Humans and dinosaurs in one sketch in Lost World by Arthur Conan Doyle in 1912.

What are you favourite Iguanodon illustrations?

For more looks at a world gone by, here's a treasure-trove of historic maps of the Earth and the Moon. Today is Dinosaur Day for the io9 Recruits! Check out more stories of dinosaurs on Space, Animals, and Animation.