Fact 1: If fossils of an animal or plant are found in a place then that animal or plant used to live in that place.

Fact 2: Dinosaurs are the most popular fossils.

Given the two facts above, answer the question "Where are dinosaur remains usually found?" with the following options: 
- mouth of rivers
 - dead organisms
 - where they used to live
 - places they had never been
 - where they visit occasionally
 - places they would avoid
 - sedimentary rocks
 - deposit feeders


 

   where they used to live      