![Gideon Mantell Photograph by Natural History Museum, London/science Photo Library | Fine Art America Gideon Mantell Photograph by Natural History Museum, London/science Photo Library | Fine Art America](https://images.fineartamerica.com/images-medium-large-5/1-gideon-mantell-natural-history-museum-londonscience-photo-library.jpg)
Gideon Mantell Photograph by Natural History Museum, London/science Photo Library | Fine Art America
![Darren Naish on Twitter: "Part of our interest in #dinosaurs comes from their famous extinction 66 million years ago, a topic made especially exciting by the suggestion that it had an extraterrestrial Darren Naish on Twitter: "Part of our interest in #dinosaurs comes from their famous extinction 66 million years ago, a topic made especially exciting by the suggestion that it had an extraterrestrial](https://pbs.twimg.com/media/FG__nRSX0AE8ZN1.jpg)
Darren Naish on Twitter: "Part of our interest in #dinosaurs comes from their famous extinction 66 million years ago, a topic made especially exciting by the suggestion that it had an extraterrestrial
![The Royal Society on Twitter: "Born #OnThisDay in 1790 was palaeontologist and geologist Gideon Mantell FRS. His discovery of and research on Iguanadon kicked off the study of dinosaurs. A dinosaur species The Royal Society on Twitter: "Born #OnThisDay in 1790 was palaeontologist and geologist Gideon Mantell FRS. His discovery of and research on Iguanadon kicked off the study of dinosaurs. A dinosaur species](https://pbs.twimg.com/media/FKqtjT6XIAYqoeK.jpg:large)
The Royal Society on Twitter: "Born #OnThisDay in 1790 was palaeontologist and geologist Gideon Mantell FRS. His discovery of and research on Iguanadon kicked off the study of dinosaurs. A dinosaur species
![Gideon Mantell Photograph by Natural History Museum, London/science Photo Library | Fine Art America Gideon Mantell Photograph by Natural History Museum, London/science Photo Library | Fine Art America](https://images.fineartamerica.com/images-medium-large-5/2-gideon-mantell-natural-history-museum-londonscience-photo-library.jpg)
Gideon Mantell Photograph by Natural History Museum, London/science Photo Library | Fine Art America
![Iguanodon and Dr. Gideon Mantell (Dinosaurs and Their Discoverers): Hartzog, Brooke: 9780823953257: Amazon.com: Books Iguanodon and Dr. Gideon Mantell (Dinosaurs and Their Discoverers): Hartzog, Brooke: 9780823953257: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/51NrFwDryVL._SX492_BO1,204,203,200_.jpg)
Iguanodon and Dr. Gideon Mantell (Dinosaurs and Their Discoverers): Hartzog, Brooke: 9780823953257: Amazon.com: Books
![Darren Naish on Twitter: "#BTCon18 Gideon Mantell's Iguanodon and Hylaeosaurus (2 of the 3 founder members of Owen's Dinosauria) are from the Wealden, for example. https://t.co/u4gZTyn0Pf" / Twitter Darren Naish on Twitter: "#BTCon18 Gideon Mantell's Iguanodon and Hylaeosaurus (2 of the 3 founder members of Owen's Dinosauria) are from the Wealden, for example. https://t.co/u4gZTyn0Pf" / Twitter](https://pbs.twimg.com/media/DgUYmZLWsAAXuZ3.jpg)