This section of a very large ichthyosaur jaw probably belonged to a marine monster called Temnodontosaurus platyodon. Because it’s obviously worn by the sea, the fossil was almost certainly found somewhere near Lyme Regis. The Lyme Regis Museum has a spectacular ichthyosaur specimen on display – check it out to get a sense of the size of these creatures. These jaws would have belonged to an animal that would have been about six metres long!
Find out more on the reptiles pages.