What type of landforms were in the cretaceous time period?

There was a lot of chalk because a large area of the continents was covered by warm shallow seas, as a result of that there was a lot of marine limestone. You can also find chalk with many types of algae that flourished during the cretaceous period.

An example of a landform would be the white cliffs of dover. There are also landforms in Sussex, the isle of Wright and East Dorset