Can a Mississippi map and a eastern painted turtle be in the same tank?

the answer to that is yes

well, sort of, a map turtle is a variety of species:

Mississippi map turtle

Texas map turtle

Cagle's map turtle

Black knobbed map turtle

Ouachita map turtle

P.s. if you want to get a map turtle you should get the Texas map turtle! the males at full maturity get to about 3.5 inches