How was jurassic coast formed

full detail pls

The fossil remains built up over 185 million years. it was formed through the Jurassic, Triassic and cretaceous periods

The telegraph idk what else to tell you you are probably just gonna copy it which btw i would do the same thing but it says i have to have at least 20 characters so yeah there you go 

What do i have to choose from? what are the answer choices? .