Extinct fauna of the United Kingdom

This category is reserved for extinct animals that have been discovered in the United Kingdom, which includes England, Scotland, and Ireland. Despite the small land mass and high human settlement prior to the concept of extinction, this country is fruitful of several kinds of extinct animals, and was the place where the first dinosaurs were discovered and named, such as Megalosaurus and Iguanodon.

For further specification, please browse the categories for animals discovered in countries housed in the United Kingdom:

• Extinct fauna of England
• Extinct fauna of Scotland
• Extinct fauna of Ireland