Explore our fossils to see what animals lived in our seas around 100 million years ago.
Marine creatures
Marine fossils
Sussex covered by an ancient sea
Did you know that 100 million years ago the whole of the UK was covered by a warm ocean? Only the tops of the Scottish mountains would have poked above sea-level.
How do we know this? What lived in this warm shallow sea covering Sussex? How does it compare to now? We can use the Booth Museum’s important collection of fossils from the Cretaceous period to find out more.
Marine creatures
Explore our fossils to see what animals lived in our seas around 100 million years ...
Sussex: an ancient sea bed
How do we know that Sussex was covered by a warm sea? The answer lies ...