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This article is a timeline of palaeontological discoveries.
17th century
1670s
- 1676: The first Megalosaurus fossil was discovered in Oxfordshire. It was temporarily named "Scrotum humanum" by Richard Brookes in a caption of a book but was later renamed Megalosaurus.
19th century
1800s
- 1809: The first Iguanodon fossil was discovered by William Smith.
1810s
- 1811: The first Temnodontosaurus, then thought to be Ichthyosaurus, fossil was discovered in Charmouth, England by Mary Anning.
1820s
- 1820 - 1821: The first Plesiosaurus fossil was discovered by Mary Anning.
- 1821: Mary Anning discovered Ichthyosaurus platyodon, which has now been renamed Temnodontosaurus platyodon.
- 1822: The first Iguanodon tooth was discovered by Gideon Mantell
- 1824: William Buckland described Megalosaurus, making it the first dinosaur to be scientifically described.
- 1825: Gideon Mantell describes Iguanodon.
- 1828: The first Dimorphodon fossil, originally named Pterodactylus marconyx, was discovered by Mary Anning.
- 1829: The first Squaloraja fossil was discovered by Mary Anning.
1830s
- 1833: The first Hylaeosaurus fossil was discovered by Gideon Mantell.
- 1836: The Hitchcock's dinosaur footprints were discovered. It was later discovered that the footprints were made by the Triassic dinosaur Anchisaurus.
1840s
- 1842: Sir William Owen proposed the name Dinosauria, meaning "terrible lizards", for the new group of reptiles.
1850s
- 1855: The first North American dinosaur remains were discovered by Ferdinand Vandeveer Hayden.
- 1858: The first reasonably complete dinosaur skeleton, a Hadrosaurus, was discovered in North America by William Foulke.
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