How did the trilobites contribute to the
formation of dolomite and limestone

Explanation: Over the course of millions of years they dissolve away the outer shell, sometimes replacing the molecules of exoskeleton with molecules of calcite or other minerals. In time the entire shell is replaced leaving rock in the exact shape of the trilobite. That is the fossilization process at work.

you go to account and hit delete!

explanation:

your answer is "the 1950's"