Mary Ann Mantell (1795-1869) and her husband Dr Gideon Algernon Mantell (1790-1852), are recorded as having found the first evidence of Iguanodon. Husband and wife, Gideon Algernon and Mary Ann Mantell · Most accounts hold that Mary was accompanying her husband on a trip to visit a patient in Sussex, when she noticed something glinting by the side of the road. When Mary went to investigate she discovered a collection of fairly large teeth embedded in the rocks.

1 day ago - These animals had large, tall but narrow skulls, with toothless beaks probably covered with keratin, and teeth like those of iguanas, as the name suggests, but much larger and more closely packed. Unlike hadrosaurids, which had columns of replacement teeth, Iguanodon only had one replacement ...

However, the dinosaur has only recently claimed its true identity, after spending over 80 years known to the world as a species of Iguanodon. In 1825, Dr Gideon Algernon Mantell - an English surgeon, geologist and palaeontologist - described several prehistoric teeth from the Wealden district ...

June 21, 2024 - Mantell illustrated his announcement with a single lithographed plate (below). It depicts seven Iguanodon teeth, the finest being the tooth shown in two views at top right and below (see an enlarged detail at right).

Iguanodon Bones from Gideon Mantell’s collection LDUCG-X1606 · In 1822 some teeth were discovered in a quarry in Tilgate Forest, Sussex. Some sources say Gideon Mantell found them, some credit his wife Mary Ann, who illustrated many of his books and papers.

This is a rare, .75" long shed tooth of an Iguanodon from Horsham, West Sussex, England.

Every relic of this kind is consequently in the highest degree interesting, and it is therefore most gratifying to me to have it in my power to lay before the Royal Society a considerable portion of the lower jaw, with teeth, of an Iguanodon, recently obtained from a quarry near Cuckfield in Sussex; the locality in which, nearly thirty years since, I first discovered the teeth of this colossal herbivorous Lizard.

This small and rather unprepossessing object is one of Te Papa's most valuable treasures - a fossil iguanodontid tooth with a worn crown.

Dinosaur teeth are among the most plentiful fossil finds, and paleontologists have been able to learn a lot from them. In fact, the discovery of iguanodon teeth in 1822 is said to have been the catalyst of dinosaur study in the Western world.

August 27, 2024 - "The teeth and jaws of the ornithopods changed drastically during their evolution," Attila says. "Earlier members of the group, like Iguanodon, took more than 200 days to form their teeth and at least that long to wear them down by chewing.

Iguanodon teeth were much more suited for eating plants, which was quite convenient, since they were herbivores. The Iguanodon made up for its lack of sharp teeth, with its sharp thumb spike.

April 10, 2022 - As described by Dennis Dean in his book Gideon Mantell and the Discovery of Dinosaurs (Cambridge University Press; 1999) by November 1821 Mantell was in possession of at least six iguanodon teeth f…

April 22, 2022 - The dino uses its hands to pull the plant closer to its beak. Its mouth is full of curved and grooved teeth for grinding plants, and its jaws can move both up and down and side to side as it eats.

The fossils used to describe a new genus or species are called type specimens, and they form the template to which all subsequent discoveries are compared. However, the fossils figured in the description of Iguanodon were all teeth. As more fossils were found, scientists realised that these type specimens represented more than one species, making the original assignment of Iguanodon problematic.

April 21, 2014 - This particular photograph jumped out because I recognised it instantly with pure awe. They are two teeth of one of the first dinosaurs ever discovered and named; Iguanodon.

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May 16, 2025 - The name Iguanodon means iguana-tooth, noting the similarity of the dinosaur’s jaw and teeth to that of the iguana. The Iguanodon was about 5 metres tall and about 11 metres long, weighing up to four or five tons with powerful back legs and a massive tail to help it balance.

September 15, 2025 - Micro-CT scans revealed not only the visible teeth, but also replacement teeth embedded in the jaw — new teeth already forming to replace worn ones. This kind of tooth replacement is typical for iguanodonts, but it has rarely been observed ...

October 29, 2024 - Emboldened nevertheless, Mantell again sent some teeth to Cuvier, who answered on 22 June 1824 that he had determined that they were reptilian and quite possibly belonged to a giant herbivore.[3] However, assistant-curator Samuel Stutchbury recognised that they resembled those of an iguana he had recently prepared, albeit twenty times longer. Mantell's "Iguanodon" restoration based on the Maidstone "Mantellodon" remains in recognition of the resemblance of the teeth to those of the iguana, Mantell decided to name his new animal Iguanodon or "iguana-tooth", from iguana and the Greek word ὀδών (odon, odontos or "tooth").