Answer:
Cretaceous
rex live? T. rex lived about 66–68 million years ago during the Cretaceous Period in the western United States, including Montana and Wyoming.
Explanation:
Answer:
they are the hard deposits that was made of minerals and salts that forms inside in your body.
I took the test and the correct answer is "If the strata contained similar fossils, then they (fossils) were from the same period of time"
UwU