NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY
Iguanodon tooth fossils. Fossilised teeth from the herbivorous dinosaur Iguanodon. This dinosaur lived around 140 to 110 million years ago, during the Early Cretaceous. It used its teeth to grind vegetation. The tooth on the right is 5.3 centimetres long. These fossils, held at the Natural History Museum, London, UK, are part of the original fossil Iguanodon finds made by British geologist Gideon Algernon Mantell (1790-1852) and his wife in 1822.
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